TWI675642B - Clip applier - Google Patents

Abstract

A blood vessel clamp device is an upper jaw mouth and a lower jaw mouth which are pivotally connected to the upper and lower sides of a front end of a track. The upper and lower ends are spaced apart and supported by a pre-clamp spring. There are a plurality of plastic nails on the track, a nail-feeding push rod for pushing the plastic nails, and a pre-clamping push rod hooked with the nail-feeding push rod The pre-clamping push rod is provided with a convex block which pushes the rear end where the upper and lower jaw mouths cross to open the upper and lower jaw mouths. When the present invention is used, it is installed on an actuator such as a driving handle. When the plastic pusher pushes each plastic nail, it can first drive the pre-clamp pusher to advance, so that the projection releases the upper and lower jaws into a pre-clamped state, allowing the jaw structure to easily extend into the human body for The operation of clamping is to allow the plastic nail to smoothly enter between the upper and lower jaws.

Description

Vascular clamp

The invention relates to a structure of a surgical instrument, and in particular to a blood vessel clamping device for clamping a plastic nail in a blood vessel.

During the laparoscopic surgery, the blood vessel needs to be closed to avoid blood loss from the incision at the surgical site. At this time, a surgical instrument that closes the blood vessel, such as a vascular clip applier, is used to close the blood vessel. The use method of the vascular clip applier is to set a plastic nail in the jaw of the front end of the vascular clip applier, and extend the pliers mouth and the plastic nail into the human body through the opening cut by the human body surface, and then operate the vascular clip The grip of the device drives the jaw to close, so that the plastic nail is clamped on the blood vessel of the human body to close the blood vessel.

The structure of the plastic nail used in the above-mentioned vascular clip applier is that a buckle is formed at the front end of the two clamp arms connected at the rear end, and a lateral columnar positioning rod is formed at the front end of the two clip arms. When applying the clamp, the plastic nail is pushed forward from the front to the front end of the pliers mouth. During the process, the two positioning rods of the plastic nail will slide forward along the inside of the pliers mouth. When the front end of the jaw mouth is opened and opened together, the jaw mouth can be driven to close and the plastic nail is fastened around the blood vessel to stop bleeding. However, because the aforementioned conventional vascular clip applier lacks a structure for pre-clamping the jaws, the jaws are not maintained in a closed state before extending into the human body, so that the jaws cannot easily enter the human body from the opening cut by the human body surface. It is also not easy for plastic nails to enter the jaws smoothly.

Due to the lack of a pre-clamped structure of the existing plastic staple vascular clip applier, it is not easy to enter the human body through an opening cut off from the surface of the human body. To this end, the present invention uses a pre-clamping structure to keep the jaws closed first, and then use the plastic nails to advance into the jaws and then use them open, so that the plastic nails can smoothly enter the jaws and the jaws easily enter the human body. Effect.

In order to achieve the above object, the present invention provides a vascular clamp device, the structure of which includes: a nail groove provided with a track, a frame is formed at the front end of the track; a jaw structure, including an upper jaw in an open state; Mouth, lower jaw mouth and a compressed pre-clamping spring, the upper jaw mouth is provided with two upper front feet on the left and right sides, and the rear ends of the two upper front feet are rotatably pivoted on the upper sides of the left and right sides of the frame An upper cross foot is extended backward and downward at the rear end of one upper front foot, and an upper closed foot is extended backward at the rear end of the other upper front foot; the lower pliers mouth is provided with two clicks on the left and right sides. The front feet, the rear ends of the two lower front feet are rotatably pivotally connected to the lower sides of the left and right sides of the frame, in which the rear ends of the lower front feet are extended backwards and upwards, and the upper cross feet and the lower cross feet are Crossed shape and the distance between the two is wide at the front and narrow at the rear, and a closing foot is extended backward at the rear end of the other lower front foot; the pre-clamp spring is fixed on the track and opens the upper closing foot and the lower closing force Feet; multiple plastic nails are arranged in the form of anterior and posterior intervals In the track, the foremost plastic nail is located in the frame; a nail-feeding push rod is penetrated in the track and the front end penetrates into the frame, and cooperates with the foremost plastic nail at the front of the nail-feeding push rod. A nail pushing piece is provided, and a plurality of nail changing pieces are provided on the nail pushing push rod in cooperation with the remaining plastic nails, and a pre-clamping push rod hook hole is penetrated in the part of the nail pushing push rod which does not extend into the frame body. A pre-clamping push rod, which is arranged on the outside of the nail-injecting push rod and partially extends against the upper and lower cross feet; a pre-clamping push rod hook and a projection are provided on the pre-clamping push rod; The pre-clamping pusher hook can be hooked off the hook of the pre-clamping pusher, and the projection abuts between the upper cross foot and the rear end of the lower cross foot, and the upper cross foot and the lower cross foot The distance between the front ends is sufficient to accommodate the bump; and A covering push rod assembly is slidably sleeved around the nail groove and the nail feeding push rod. The covering push rod assembly is provided with a jaw driving tube which is slidably sleeved on the Around the track, the nail-feeding push rod and the pre-clamping push rod, the forward direction of the jaw driving tube interferes with the two upper front feet and the two lower front feet to drive the upper jaw to be clamped with the lower jaw.

Further, in the present invention, an upper jaw mouth is connected to the front ends of the two upper front feet, and a jaw mouth is connected to the front ends of the two lower front feet, and the upper front mouth and the lower front mouth are located on the upper and lower two of the front of the track. On the side, a pair of upper pivot holes and a pair of lower pivot holes are respectively penetrated at the upper and lower positions of the left and right sides of the frame, and an upper pivot shaft is provided at each rear end of the two upper front feet, and the upper pivot shafts are pivoted by the two upper pivot shafts. Through the pair of upper pivot holes, lower shafts are respectively provided at the rear ends of the two lower front feet, and the lower pivot holes are pivoted through the two lower pivot shafts.

Further, in the present invention, a first non-return elastic piece is inwardly extended on the upper side of the inner surface of the front section of the frame body. The first non-return elastic piece is a piece body which is inclined from the back to the inside. A positioning spring is extended inwardly in the middle of the frame, and a plastic nail hook is extended inward below the front end of the frame. A plurality of anti-return springs are arranged in a spaced-apart manner in the front and back of the inner surface of the track. The reverse elastic sheet is a sheet body inclined from the back to the inside; each of the plastic nails includes two clamping arms connected at the rear ends, a buckle is formed between the front ends of the two clamping arms, and the front ends of the two clamping arms are respectively formed A horizontal column-shaped positioning rod. The most front plastic nail is positioned between two positioning elastic pieces. The plastic nail hooks the positioning rod below the plastic nail. The positioning rod above the plastic nail abuts against the first positioning nail. The front side of one non-returning elastic sheet, and the remaining plastic nails abut against the front sides of multiple non-returning elastic sheets, respectively.

Further, in the present invention, an upper buckle groove is formed on the lower side of the rear end of the upper closed foot, a lower buckle groove is formed on the upper side of the rear end of the lower closed foot, and a pre-clamped spring buckle is formed on the outside of the track. The pre-clamping spring is a U-shaped spring and has two outer hooks. The middle of the pre-clamping spring is fixed to the pre-clamping spring buckle, and the two outer hooks are hooked to the upper buckle groove and the lower buckle groove.

Furthermore, in the present invention, a nail groove fixing piece is provided at the rear end of the track, and a nail groove fixing hole is penetrated in the nail groove fixing piece; the covering push rod assembly is provided with a sliding tube, which can be Slidingly sleeved around the nail groove and the nail-feeding push rod, the rear end of the jaw driving tube is engaged and fixed at the front end of the sliding tube, and a sliding tube is driven transversely through the sliding tube. The slide tube driving hole is a long hole extending in the front-rear direction.

A front section of the nail-feeding push rod is inserted through the track, and a rear-end of the nail-feeding push rod is provided with a nail-feeding push-rod driving piece, and an inner side of the rear section of the nail-feeding push-rod is abutted with a Push the clamp rod, the front end of the push clamp rod penetrates into the track, corresponding to the position of the slide tube drive hole, a push clamp rod drive hole is penetrated in the middle of the push clamp rod, and the nail push rod drive piece abuts against At the rear end of the pushing clamp rod, a tubular nail fixing shaft is sleeved on the nail feeding push rod and the rear end of the pushing clamping rod. The rear end of the nail fixing shaft is a closed end and the front end is combined with the pushing clip. A rear end of the rod is provided with a nail-feeding push rod buffer spring in a compressed state, and the front end of the nail-feeding push rod buffer spring abuts against the nail-feeding push rod driving piece.

A tubular handle combination seat is sleeved around the track, the nail-feeding push rod, the pushing clamp rod, the nail-feeding fixing shaft, and the sliding tube, the nail groove, the nail-feeding push rod, and the jaw driving tube. The front end of the handle passes forward through the handle combination seat, and a fixing pin hole is horizontally penetrated on the front side of the handle combination seat in cooperation with the nail slot fixing hole, and a fixing pin is inserted through the fixing pin hole and the nail slot fixing hole. A driving pin avoidance hole is transversely penetrated in the middle of the handle combination seat in cooperation with the sliding tube driving hole, and the drive pin avoidance hole is a long hole extending in the front-rear direction. A covering rod sliding sleeve is sleeved around the handle combination seat. A driving pin fixing hole is penetrated laterally in the sliding sleeve of the cover rod, and a driving pin is penetrated and fixed in the driving pin fixing hole. The driving pin passes through the driving pin avoiding hole, the sliding tube driving hole, and the pushing clamp rod driving. hole.

Preferably, the present invention corresponds to the front side and the rear side of the drive pin avoiding hole, respectively, to form an annular front flange and an annular rear flange on the inner peripheral surface of the handle coupling seat, A spring seat with a large outer diameter is formed on the rear side of the sliding tube. The spring seat is located on the rear side between the front flange and the rear flange. A sliding tube spring is sleeved around the sliding tube. The rear end and the front end of the sliding tube spring abut against the peripheral edge in front of the spring seat and the rear side of the front flange, respectively.

Preferably, in the present invention, a plurality of guide blocks are protruded outwardly on the outer peripheral surface of the rear end portion of the nail fixing shaft in a surrounding and spaced manner, and a small outer diameter is formed at the rear end portion of the handle coupling seat. In the tail section, a ring-shaped shoulder is formed on the periphery of the front side of the tail section. According to the positions of several guide blocks, a plurality of guide grooves are penetrated in the tail section, and each guide block penetrates each guide groove. A rear end of the rear section is sleeved with a return spring, and the return spring abuts between the outer ends of the guide blocks and the shoulder.

Preferably, according to the present invention, four recessed portions are formed around the front end of the jaw driving tube according to the positions of the upper sides of the two upper front feet and the lower sides of the two lower front feet.

When the present invention is used, it is provided on an actuator such as a driving handle, which uses the driving handle to drive the nail-feeding push rod and the cover-feeding push rod assembly to move forward and backward, and when the nail-feeding push rod advances, the pre-motion is driven. The clamping pusher advances together, so that the projection of the pre-clamping pusher moves forward to a position where it no longer abuts the rear end of the upper cross leg and the lower cross leg. At this time, the upper jaw and the lower jaw are clamped by the pre-clamp. The spring drive is in a pre-clamped state, and then the nail-feeding push rod continues to move forward, the pre-clamping push-rod is decoupled from the nail-feeding push rod, and the nail-pushing piece of the nail-feeding push rod pushes the most forward plastic nail. It is open between the upper jaw mouth and the front end of the lower jaw mouth, and then the cover push rod assembly is pushed forward, and the upper jaw mouth is forced to engage the lower jaw mouth with the jaw driving tube. Plastic nail, complete the operation of clamping the plastic nail.

The effect of the present invention is that before the nail feeding pusher pushes the most forward plastic nail to the front end of the upper jaw and the front of the lower jaw, the protrusion can be released from the support by pushing the pre-clamp pusher forward. Open the position of the upper and lower jaw mouths, so that the upper and lower jaw mouths can be pre-clamped, so that in addition to allowing the plastic nail to smoothly enter between the upper and lower jaw mouths, the upper jaw mouth And the lower jaw can also easily extend into the opening cut by the human body, which is convenient for the user to perform the operation of plastic nail clamping.

A‧‧‧Sliding tube housing

B‧‧‧Handle Combined Housing

10‧‧‧nail groove

11‧‧‧ track

111‧‧‧ Entrance

112‧‧‧ nail slot fixing piece

1121‧‧‧nail groove fixing hole

113‧‧‧ Pre-clamp spring buckle

12‧‧‧Frame

121‧‧‧ positioning shrapnel

122‧‧‧Plastic nail hook

123‧‧‧The first non-return shrapnel

124‧‧‧ Upper pivot hole

125‧‧‧ lower pivot hole

13‧‧‧ Anti-reverse shrapnel

19‧‧‧Plastic nail

191‧‧‧ Clamp Arm

192‧‧‧Snap

193‧‧‧Positioning lever

20‧‧‧ Clamping mouth structure

21‧‧‧Upper mouth

211‧‧‧ Upper mouth

2111‧‧‧ Upper guide trench

212‧‧‧ Go forward

213‧‧‧up shaft

214‧‧‧ Crossed feet

215‧‧‧ closed feet

2151‧‧‧ Upper Buckle

22‧‧‧ Lower jaw

221‧‧‧ lower mouth

2211‧‧‧Lower guide channel

222‧‧‧ lower forefoot

223‧‧‧ lower shaft

224‧‧‧ lower cross feet

225‧‧‧ lower closed foot

2251‧‧‧Lower Buckle

23‧‧‧ Pre-clamped spring

231‧‧‧Out hook

30‧‧‧Injection putter

31‧‧‧Pushing nails

32‧‧‧Pick nails

33‧‧‧ Pre-clamping Putter Hook Hole

34‧‧‧ forward nail putter avoidance

35‧‧‧Middle-in nail putter avoidance

36‧‧‧ Backward Push Rod Avoidance

37‧‧‧ Nail-in putter driver

40‧‧‧ pre-clamp putter

41‧‧‧ Pre-clamped putter hook

42‧‧‧ bump

50‧‧‧advance clamp lever

51‧‧‧Front push rod avoidance

52‧‧‧Push pin drive hole

53‧‧‧ Nail feed shaft connection hole

55‧‧‧Fixed shaft

551‧‧‧Pin fixing shaft pin hole

552‧‧‧Fixed shaft pin

553‧‧‧Guide block

56‧‧‧Nutting spring

60‧‧‧ Over putter assembly

61‧‧‧Sliding tube

611‧‧‧Spring seat

612‧‧‧Sliding tube driving hole

613‧‧‧Front sliding tube avoidance

62‧‧‧Jaw mouth driving tube

621‧‧‧ Depression

63‧‧‧Sliding tube spring

70‧‧‧handle combination seat

71‧‧‧fixed pin hole

711‧‧‧Fixed pin

72‧‧‧Drive pin avoidance

73‧‧‧ front flange

74‧‧‧ rear flange

75‧‧‧ tail

751‧‧‧Shoulder

752‧‧‧Guide groove

76‧‧‧Return spring

80‧‧‧ Cover rod slide

81‧‧‧Drive pin fixing hole

811‧‧‧Drive Pin

82‧‧‧ fixed ring

FIG. 1 is a perspective view of a preferred embodiment of the present invention.

FIG. 2 is an exploded view of a preferred embodiment of the present invention.

FIG. 3 is an exploded view of a jaw structure of a preferred embodiment of the present invention.

FIG. 4 is a perspective view of a front end of a nail groove according to a preferred embodiment of the present invention.

5 is an exploded view of the jaw structure of the preferred embodiment of the present invention from another angle.

Fig. 6 is a left side view of a partial section of a preferred embodiment of the present invention.

Fig. 7 is a right side view of a partial section of a preferred embodiment of the present invention.

FIG. 8 is a plan view of a partial cross section of a nail groove according to a preferred embodiment of the present invention.

FIG. 9 is an exploded view of parts of a preferred embodiment of the present invention.

Fig. 10 is a sectional view of the second half of the preferred embodiment of the present invention.

Fig. 11 is a sectional view of the first half of the preferred embodiment of the present invention.

FIG. 12 is a cross-sectional flow chart of pre-clamping in the preferred embodiment of the present invention.

FIG. 13 is a side-view flow chart of pre-clamping according to a preferred embodiment of the present invention.

FIG. 14 is a cross-sectional flow chart of a clip application according to a preferred embodiment of the present invention.

FIG. 15 is a side-view flow chart of a clip application according to a preferred embodiment of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and can be implemented in accordance with the contents of the description, the preferred embodiment shown in the drawings is further described in detail as follows.

Please refer to the preferred embodiment of the present invention as shown in FIG. 1 to FIG. 11. The present invention provides a vascular clamp device, which includes a nail groove 10 and a jaw structure 20 pivotally connected to the front end of the nail groove 10. A plurality of plastic nails 19 provided in the nail groove 10, a nail-feeding push rod 30 slidably provided in the nail groove 10, a pre-clamping push rod 40 hooked with the nail-feeding push rod 30, and leaning together A pushing rod 50 of the nail pushing push rod 30, a nail fixing shaft 55 coupled to the rear end of the pushing pin 50, and a set of overlying push rod assemblies disposed around the nail groove 10. 60. A set of handle combination bases 70 provided around the cover push rod assembly 60, and a set of cover rod slide 80 provided around the handle combination base 70 and connected to the push pin 50, wherein: As shown in FIG. 2 to FIG. 5 and FIG. 8, the nail groove 10 is provided with a track 11 extending in the front and rear directions. A side entrance 11 is formed on the side of the track 11, and a rear end of the track 11 is extended to form A nail groove fixing piece 112 is provided with a nail groove fixing hole 1121 at the rear end of the nail groove fixing piece 112, and a pre-clamped spring buckle 113 is formed on the front side of the outer side of the rail 11 on which the placing inlet 111 is not formed; The front end of the track 11 forms a frame 12 which is closed around. A plurality of check springs 13 are arranged in the front and back spaced arrangement of the middle of the inner surface of the track 11, and each check spring 13 goes from the back to the inside. The inclined piece body, the front end of each non-return elastic piece 13 projects into the track 11, and a positioning elastic piece 121 is extended inwardly in the middle of the left and right sides of the front section of the frame body 12, inwardly below the front end of the frame body 12 A plastic nail hook 122 is extended, and a first non-return spring piece 123 is extended inward on the upper side of the inner surface of the front section of the frame 12. The first non-return spring piece 123 is a piece inclined from the back to the inside, and the front end of the first non-return spring piece 123 projects into the track 11 at the upper and lower positions of the left and right sides of the middle section of the frame 12, respectively. A pair of upper pivot holes 124 and a pair of lower pivot holes 125 are defined.

As shown in FIG. 3 to FIG. 8, the jaw structure 20 includes an upper jaw 21, a lower jaw 22, and a pre-clamping spring 23. The upper jaw 21 is provided with an upper mouth 211. At the bottom of 211, an upper guide groove 2111 is formed at the front end of which is a closed end. Two upper front feet 212 are extended backward and downward from the left and right sides of the rear end of the upper mouth 211, and the rear ends of the two upper front feet 212 are respectively An upper rotating shaft 213 is protruded inward, and two upper rotating shafts 213 are rotatably provided in the pair of upper pivot holes 124. A rear end of the upper front foot 212 corresponding to the side of the entrance 111 is extended backward and downward. The upper cross leg 214 is provided with an upper closing leg 215 extending backward from the rear end of the other upper front leg 212, and an upper buckling groove 2151 is formed on the lower side of the rear end of the upper closing leg 215.

The lower jaw 22 is provided with a lower mouth portion 221, the upper mouth portion 211 and the lower mouth portion 221 are open, and are located on the upper and lower sides in front of the track 11, and are formed on the top of the lower mouth portion 221 A front end is a lower guide groove 2211 with a closed end, and two front feet 222 are extended backward and upward obliquely from the left and right sides of the rear end of the lower mouth portion 221, and the rear ends of the two front feet 222 are respectively projected inwardly. Spindle 223 with two clicks The rotation shaft 223 is rotatably disposed in the pair of lower pivot holes 125, and the rear end of the lower front foot 222 corresponding to the side of the entrance 111 extends backward and upwards to cross the foot 224, and the upper cross foot 214 intersects with the lower Feet 224 is in a cross form. The distance between the upper cross leg 214 and the lower cross leg 224 is front wide and narrow, and a closed foot 225 is extended backward at the rear end of the other lower front foot 222. The upper closed foot 215 and The lower closing leg 225 has an upper and lower spaced form, and a lower buckle groove 2251 is formed on the upper side of the rear end of the lower closing leg 225.

The pre-clamp spring 23 is a U-shaped spring and has two outer hooks 231. The middle of the pre-clamp spring 23 is fixed to the pre-clamp spring buckle 113. The pre-clamp spring 23 is in a compressed state and is hooked with two outer hooks 231 In the upper buckling groove 2151 and the lower buckling groove 2251, the upper closing foot 215 and the lower closing foot 225 are subjected to an opening force. When the upper jaw 21 and the lower jaw 22 are released, they can drive the upper jaw 21 and the lower jaw 22 The upper mouth portion 211 and the lower mouth portion 221 are sandwiched.

As shown in FIG. 2, FIG. 4 and FIG. 8, a plurality of plastic nails 19 are arranged in the track 11 in a front and rear spaced arrangement. Each plastic nail 19 includes two clamping arms 191 connected at the rear ends. A buckle 192 is formed between the front ends of the 191, and a horizontal columnar positioning rod 193 is formed at the front ends of the two clamping arms 191. The plastic nail 19 at the front is positioned between the two positioning elastic pieces 121, and the plastic nail 19 The positioning rod 193 below is elastically hooked backwards by the plastic nail hook 122. The positioning rod 193 above the plastic nail 19 abuts against the front side of the first non-return spring piece 123, and the rear of the remaining plastic nails 19 The ends abut against the front sides of the plurality of anti-slip springs 13 respectively. In addition to the foregoing preferred embodiment, the present invention has only the foremost plastic nail 19 positioned by the first non-slip spring 123. The non-return spring 13 is changed to the same structure as the first non-return spring 123, so that the foremost and second plastic nails 19 can abut the front side of each first non-return spring 123 with the positioning rod 193 above. Positioning, to achieve the anti-reverse effect to avoid the foremost and the second plastic nail 19 backwards.

As shown in FIGS. 2 to 4 and FIGS. 8 to 9, the nail-feeding push rod 30 is a long rod body extending in the front and rear directions. The front section of the nail-feeding push rod 30 is inserted into the track 11 through the insertion opening 111 and Abutting on a plurality of plastic nails 19, a front end portion of the nail feeding push rod 30 penetrates into the frame body 12, and a front end of the nail feeding push rod 30 extends forward A nail pushing piece 31 is formed. The nail pushing piece 31 is located at the rear side of the plastic nail 19 in the forefront. In cooperation with the remaining plastic nails 19, the shape is set at the front and rear intervals of the upper side of the front section of the nail pushing rod 30. There are a plurality of nail pieces 32, each nail piece 32 is a body inclined from the back to the front, and the front end of each nail piece 32 is located on the rear side of the positioning rod 193 on the upper side of each plastic nail 19. When the push rod 30 advances along the track 11, the push nail piece 31 and the plurality of finger nail pieces 32 can push the plastic nail 19 and the remaining plastic nails 19 forward along the track 11, so that the most forward The plastic nail 19 enters between the upper mouth portion 211 and the lower mouth portion 221 along the upper guide groove 2111 and the lower guide groove 2211, and the remaining plastic nails 19 advance to replace the next plastic nail, respectively. 19 positions.

A pre-clamping pusher hook hole 33 is inserted in the part of the front section of the nail-in putting rod 30 that does not extend into the frame body 12, and is matched with the position of the nail groove fixing hole 1121. A forward nail pusher avoidance hole 34 is provided. The forward nail pusher avoidance hole 34 is a long hole extending in the front-rear direction. The nail groove fixing hole 1121 and the front end of the forward nail pusher avoidance hole 34 overlap left and right. In the middle of the rear section of the nail-feeding pusher 30, a middle-nail-feeding pusher avoidance hole 35 is formed. The middle-nail-feeding push-rod avoidance 35 is a long hole extending in the front-rear direction. A rear-entry nail pusher avoidance 36 is a long hole extending in the front-rear direction. A rear end of the nail-entry pushrod 30 is turned and extended in a direction directly behind the track 11. One into the nail push rod driving piece 37.

As shown in FIG. 3 and FIGS. 5 to 7, the pre-clamping pusher 40 is a plate body extending in the front-rear direction and is disposed on the outer side of the nail-feeding pusher 30 provided with the pre-clamping pusher hook hole 33. The pre-clamping pusher 40 extends a pre-clamping pusher hook 41 in the direction of the nail-feeding pusher 30, and the pre-clamping pusher hook 41 can be detachably hooked into the pre-clamping pusher hook hole 33, and the pre-clamping The front end of the push rod 40 extends to the upper cross leg 214 and the lower cross leg 224, and a protrusion is extended from the front end of the pre-clamped push rod 40 to the upper cross leg 214 and the lower cross leg 224. 42. The protrusion 42 abuts between the rear end of the upper cross leg 214 and the lower cross leg 224, so that the upper mouth portion 211 and the lower mouth portion 221 are kept in an open state, and the upper cross leg 214 The distance from the front end of the lower cross leg 224 is sufficient to accommodate the protrusion 42. Therefore, when the pre-clamping push rod 40 follows the nail input push rod 30, When the protrusion 42 moves forward and falls between the front ends of the upper cross leg 214 and the lower cross leg 224, the upper mouth portion 211 and the lower mouth portion 221 are driven by the pre-clamp spring 23 to become Clamped state.

As shown in FIG. 2 and FIGS. 9 to 11, the pushing clamp rod 50 is a long rod body extending in the front-rear direction and the front end penetrates into the rear end of the track 11. The pushing clamp rod 50 abuts on the nail feeding push rod 30. On the inner side of the rear section, the nail-pushing pusher driving piece 37 of the nail-pushing pusher 30 abuts against the rear end of the push-pick lever 50, and matches the position of the nail groove fixing hole 1121. The forward pusher lever avoidance hole 51 is a long hole extending in the front-rear direction. The nail groove fixing hole 1121 and the front end of the forward pusher lever avoidance hole 34 overlap left and right. A push pin driving hole 52 is provided in the middle of 50, and the push pin driving hole 52 coincides with the rear end of the middle-in nail push rod avoidance hole 35 left and right. The nail-fixing shaft connection hole 53 is overlapped with the rear end of the rear nail-push rod avoiding hole 36 on the left and right.

The nail-fixing shaft 55 is a pipe body extending in the front-rear direction. The front end of the nail-fixing shaft 55 is an open end and the rear end is a closed end. The front end of the nail-fixing shaft 55 is sleeved into the nail-feeding push rod 30 and the The rear end of the clamping rod 50 is advanced, a nail fixing shaft pin hole 551 is penetrated laterally at the front end of the nail fixing shaft 55, and a nail fixing shaft pin 552 is fixed in the nail fixing shaft pin hole 551. The nail-fixing shaft latch 552 passes through the rear of the nail-fixing shaft connection hole 53 and the rear end of the rear nail-pushing rod avoidance hole 36, so that the front end of the nail-fixing shaft 55 is combined with the rear end of the pushing clamp rod 50, A nail-feeding pusher buffer spring 56 in a compressed state is provided in the nail-feeding fixing shaft 55. The front and rear ends of the nail-feeding push-out buffer spring 56 respectively abut the nail-feeding push-rod driving piece 37 and the nail-feeding fixing shaft 55. The closed end of the rear end will pull the nail-in fixing shaft 55 forward when the pushing clamp rod 50 is advanced. The nail-in fixing shaft 55 pushes the nail in-rod pusher 30 through the inner nail-in pushing rod buffer spring 56 to push the The nail-feeding push rod driving piece 37 enables the nail-feeding push rod 30 to advance with the pushing clamp rod 50, and When the pushing clamp rod 50 continues to advance and the front end of the nail feeding push rod 30 encounters resistance, the nail feeding push rod 30 can compress the nail feeding push rod buffer spring 56 with respect to the pushing clip The rod 50 is retracted to obtain a buffer; a plurality of guide blocks 553 are protruded outwardly on the outer peripheral surface of the rear end portion of the nail-in fixing shaft 55 in a surrounding and spaced manner.

As shown in FIG. 2, FIG. 6 and FIGS. 9 to 11, the covering push rod assembly 60 includes a sliding tube 61 and a jaw driving tube 62, wherein the sliding tube 61 is a tube body extending in the front-rear direction and includes two The left and right combined sliding tube housing A, the sliding tube 61 is slidably sleeved around the nail groove 10, the nail pushing push rod 30, and the pushing clip lever 50, and the nail pushing push rod 30 and the pushing clip lever 50 The rear end penetrates backward from the rear end of the slide tube 61, and the front ends of the track 11 and the nail pusher 30 pass forward from the front end of the slide tube 61; the rear end portion of the slide tube 61 forms an outer diameter A spring seat 611, which is wider than the front side, cooperates with the position of the pushing pin driving hole 52, and a sliding tube driving hole 612 is penetrated transversely in the spring seat 611. The sliding tube driving hole 612 is a long hole extending in the front-back direction. The clamping rod driving hole 52 coincides with the rear end of the sliding tube driving hole 612 left and right; in accordance with the position of the nail groove fixing hole 1121, a front sliding tube avoidance hole 613 is transversely penetrated in the middle of the sliding tube 61, and the front sliding tube avoids The hole 613 is a long hole extending in the front-rear direction, and the front end of the front sliding tube avoiding the hole 613 and the nail The groove fixing holes 1121 overlap with each other.

A sliding tube spring 63 is sleeved around the sliding tube 61. The rear end of the sliding tube spring 63 abuts against the peripheral edge in front of the spring seat 611. The sliding tube spring 63 is located between the spring seat 611 and the front sliding tube. The position between the holes 613; the jaw driving tube 62 is a long pipe body extending in the front-rear direction, the rear end of the jaw driving tube 62 is engaged with and fixed at the front of the sliding tube 61, and the jaw driving tube 62 fits Around the track 11, the nail-feeding push rod 30, and the pre-clamping push rod 40, the front end of the jaw driving tube 62 projects against the positions of the two upper front feet 212 and the two lower front feet 222, and cooperates with the two upper front feet 212 The positions of the upper side and the lower sides of the two front feet 222, please refer to FIG. 1. Four recesses 621 are formed around the front end of the jaw driving tube 62. The forward direction of the jaw driving tube 62 and the two upper front feet 212 And the two front feet 222 interfere, so when the sliding tube 61 drives the jaw driving tube 62 forward, the four recessed portions 621 will abut the upper sides of the two upper front feet 212 and the lower sides of the two front feet 222, forcing the upper jaw. 21 and this lower jaw 22 are clamped.

The handle combination seat 70 is a pipe body extending in the front-rear direction and includes two left and right combined handle combination seat shells B. The handle combination seat 70 is sleeved in the nail groove 10, the nail-introducing push rod 30, and the pushing clamp rod 50. The front of the nail fixing shaft 55 and the covering push rod assembly 60, the front ends of the nail groove 10, the nail feeding push rod 30, and the jaw driving tube 62 pass forward from the front end of the handle combination seat 70; According to the position of the nail groove fixing hole 1121 at the rear end of the nail groove 10, a fixing pin hole 71 is horizontally penetrated at the front end portion of the handle coupling seat 70, and a fixing pin 711 is inserted through the fixing pin hole 71. The fixing pin 711 passes through the nail groove fixing hole 1121, the front end of the forward nail pusher avoidance hole 34, the front end of the forward advance clamp rod avoidance hole 51, and the front end of the front slide tube avoidance hole 613, thereby the handle combination seat 70 The two-handle combination seat housing B is combined, and the handle combination seat 70 and the rear end of the nail groove 10 are fixed together.

A driving pin avoidance hole 72 is penetrated laterally in the middle of the handle coupling seat 70 in accordance with the position of the drive pin driving hole 52. The drive pin avoidance hole 72 is a long hole extending in the front-rear direction. The rear end coincides with the drive pin driving hole 52 left and right, and the front and rear sides corresponding to the drive pin avoidance hole 72 protrude inwardly on the inner peripheral surface of the handle combination seat 70 to form an annular front flange 73 and a The annular rear flange 74, the spring seat 611 of the sliding tube 61 is located on the rear side between the front flange 73 and the rear flange 74 and can slide forward, and the front end of the sliding tube spring 63 abuts against The rear side of this front flange 73.

According to the position of the nail fixing shaft 55, a tail section 75 with a small outer diameter is formed at the rear end of the handle coupling seat 70, and a ring-shaped shoulder section 751 is formed on the periphery of the front side of the tail section 75. At the positions of the guide blocks 553, a plurality of guide grooves 752 are formed around and spaced from the tail section 75. Each guide groove 752 is a long hole extending in the front-rear direction, and each guide block 553 penetrates each guide groove. The rear end of 752 can slide forward along each guide groove 752, and a return spring 76 is provided between the outer ends of the guide grooves 752 and the shoulders 751 between the guide blocks 553.

The cover rod sliding sleeve 80 is an annular body and is sleeved around the handle combination seat 70 penetrating the driving pin avoiding hole 72. A driving pin fixing hole 81 is horizontally penetrated in the cover rod sliding sleeve 80. A driving pin 811 is fixed in the driving pin fixing hole 81, and the driving pin 811 passes through the rear of the driving pin avoiding hole 72. End, the rear end of the push pin driving hole 52, the rear end of the middle pusher push rod avoidance hole 35, and the rear end of the sliding tube drive hole 612, so that the cover rod slide sleeve 80 can be linked through the drive pin 811 when it advances The advancement clamp rod 50 advances together, and when the advancement clamp rod 50 advances, the stapler insertion shaft 55 at the rear end cooperates with the structure of the stapler thruster buffer spring 56 to elastically push the stapler thruster 30 forward; As shown in FIGS. 1 and 2, a fixing ring 82 is sleeved on the rear end of the handle combination base 70, and the rear ends of the two handle combination base shells B of the handle combination base 70 are combined.

When the present invention is used, the handle combination base 70 is installed in an actuator, such as a driving handle. The driving handle is provided with a trigger. When a user presses the trigger, it can be driven by a link mechanism inside the driving handle. The cover rod sliding sleeve 80 advances. As shown in FIG. 12 and FIG. 13, when the covering rod sliding sleeve 80 is advanced, the driving pin 811 and the nail fixing shaft 55 at the rear end can be driven forward through the driving pin 811. At this time, the nail fixing shaft The nail-feeding push rod buffer spring 56 in 55 pushes the nail-feeding push rod 30 to move forward together with the pushing clamp rod 50. During the advancement of the nail-pushing pusher 30, the pre-clamping pusher 40 hooked by the pre-clamping pusher hook 41 and the pre-clamping pusher hook hole 33 will be driven forward. After moving forward, the protrusion 42 at the front end of the pre-clamping pusher 40 will move forward from the position of supporting the upper cross leg 214 and the lower cross leg 224 to the front side of the upper cross leg 214 and the lower cross leg 224. At this time, the projection 42 no longer supports the upper cross leg 214 and the lower cross leg 224, and releases the upper mouth portion 211 and the lower mouth portion 221, as shown in FIG. 7, at this time, the The restoring force of the pre-clamping spring 23 drives the upper mouth portion 211 and the lower mouth portion 221 to be clamped into a pre-clamped state. At this time, the jaw structure 20 of the present invention can be easily penetrated into a part cut by a human body, and In the subsequent process, the foremost plastic nail 19 can smoothly enter between the upper mouth portion 211 and the lower mouth portion 221.

Then, when the sliding rod sliding sleeve 80 continues to drive the nail pushing rod 30 forward, because the pre-clamping push rod 40 stays in place, the pre-clamping push rod hook 41 will be disengaged from the pre-clamping push rod hook hole 33. hook. When the nail-pushing pusher 30 continues to move forward, the foremost plastic nail 19 is pushed forward by the nail pusher piece 31, so that the foremost plastic nail 19 is separated from the plastic nail hook 122 and enters the upper mouth 211. And this lower mouth 221, becomes In a relatively closed state, the remaining plastic nails 19 are also pushed forward to the position of the next plastic nail 19 by each nail piece 32. As shown in FIG. 14 and FIG. 15, the cover sliding sleeve 80 then continues to drive the nail pusher 30 forward, because the nail pusher 31 at the front end of the nail pusher 30 has pushed the plastic nail 19 at the front. At the end, a slight advance of the nail pusher 30 at this time will open the plastic nail 19 in the forefront. When the plastic nail 19 in the foremost abuts against the nail pusher 30 and the cover slide 80 remains When moving forward, as shown in FIG. 14, the nail-pushing rod driving piece 37 at the rear end of the nail-pushing rod 30 will compress the nail-pushing rod buffer spring 56, and the restoring force of the nail-pushing rod buffer spring 56 will drive. The push-in pusher 30 supports the plastic nail 19 forward, so that the plastic nail 19 is kept open.

While the nail-pushing pusher 30 forces the plastic nail 19 in the forefront to open, the driving pin 811 driven by the cover-sliding sleeve 80 advances to a position that can abut against the front end of the sliding tube driving hole 612 to drive The slide tube 61 and the jaw driving tube 62 move forward together. The slide tube 61 will compress the slide tube spring 63 during the forward movement. During the process of the jaw driving tube 62 moving forward, please refer to FIG. 1 As shown, the four front depressions 621 will gradually abut against and clamp the upper front foot 212 and the lower front foot 222, so that the upper mouth portion 211 and the lower mouth portion 221 will eventually clamp the plastic nail 19 in the forefront. The plastic nail 19 is applied to a blood vessel. After the clip is applied, the user releases the trigger of the driving handle. The slide tube spring 63, the return spring 76, and the nail push rod buffer spring 56 of the present invention will push the structure of each part back to the original position. The operation of clip clamping can be repeated again.

The above description is only the preferred embodiments of the present invention, and is not intended to limit the scope of the rights claimed by the present invention. Any other equivalent changes or modifications made without departing from the spirit disclosed by the present invention should be included in the present invention. Within the scope of patent application.

Claims (9)

A vascular clamp device includes a nail groove provided with a track, and a frame is formed at a front end of the track. A jaw structure includes an upper jaw mouth, a lower jaw mouth, and a compression state in an opened state. Stated pre-clamping spring, the upper jaw mouth is provided with two upper front feet on the left and right sides, and the rear ends of the two upper front feet are rotatably pivoted on the upper sides of the left and right sides of the frame, and one of the upper front feet An upper cross foot is extended backward and downward, and an upper closed foot is extended backward at the rear end of the other upper front foot; the lower jaw is provided with two front feet on the left and right sides, and the rear ends of the two front feet It is rotatably pivotally connected to the lower sides of the left and right sides of the frame, in which the rear end of the lower front foot is extended backwards and upwards, and the upper cross foot is in a cross shape with the lower cross foot in between. The distance from the front is wide and the back is narrow, and a closed foot is extended backward at the rear end of the other lower front foot; the pre-clamp spring is fixed on the track and opens the upper closed foot and the lower closed foot with force; multiple plastic nails are The front and back spaced patterns are positioned on the track, and the frontmost plastic It is located in the frame; a nail-feeding push rod is penetrated in the track and the front end penetrates into the frame, and the frontmost plastic nail is provided with a nail-pushing piece at the front of the nail-feeding push rod to cooperate with the rest. A plurality of plastic nails are provided on the nail input push rod, and a pre-clamp push rod hook hole is penetrated in a part of the nail input push rod which does not extend into the frame body; The outside of the nail-driving putter extends partially to the upper and lower cross feet. The pre-clamping push rod is provided with a pre-clamping push rod hook and a projection, and the pre-clamping push rod hook can be removed from the hook. Buckled on the pre-clamping push rod hook hole, the projection abuts between the upper cross leg and the rear end of the lower cross leg, and the distance between the upper cross leg and the front end of the lower cross leg is sufficient to accommodate the projection ; And a covering push rod assembly slidably sleeved around the nail groove and the nail feeding push rod, the covering push rod assembly is provided with a jaw driving tube which is slidably sleeved Around the track, the nail-feeding push rod, and the pre-clamping push rod, the forward direction of the jaw driving tube and two front legs and two front legs Interference may drive the upper jaw and the lower clamping jaw. The vascular clamp device of claim 1, wherein an upper jaw is connected to the front ends of the two upper front feet, and a clamp jaw is connected to the front ends of the two lower front feet, and the upper front mouth and the lower front mouth are located in the A pair of upper pivot holes and a pair of lower pivot holes are respectively formed at the upper and lower sides of the front of the track, and at the upper and lower positions of the left and right sides of the frame. The rotating shaft is pivoted through the pair of upper pivot holes by two upper rotating shafts. A lower rotating shaft is provided at the rear end of the two lower front feet, and the lower pivot holes are pivoted by two lower rotating shafts. For example, the vascular clip applying device of claim 2, wherein a first non-return shrapnel is inwardly extended on the upper side of the inner surface of the front section of the frame, and the first non-return shrapnel is a sheet inclined from the back to the inside. In the middle of the left and right sides of the front of the frame, a positioning elastic sheet is respectively extended inward, and a plastic nail hook is extended inward under the front end of the frame. Each non-return spring piece is a piece which is inclined from the back to the inside; each plastic nail includes two clamp arms connected at the rear end, and a buckle is formed between the front ends of the two clamp arms, and The front ends of the two clamping arms respectively form a horizontal column-shaped positioning rod. The plastic nail in the foremost position is positioned between the two positioning elastic pieces. The plastic nail hooks the positioning rod below the plastic nail, and the plastic nail above the plastic nail. The positioning rod is abutted against the front side of the first non-return elastic piece, and the remaining plastic nails are respectively abutted against the front side of the plurality of non-return elastic pieces. The vascular clip applying device according to claim 1, wherein an upper buckle groove is formed on the lower side of the rear end of the upper closed foot, a lower buckle groove is formed on the upper side of the rear end of the lower closed foot, and a preliminarily formed outside of the track. The pre-clamped spring is a U-shaped spring and has two outer hooks. The middle of the pre-clamped spring is fixed to the pre-clamped spring buckle, and the two outer hooks are hooked to the upper buckle slot and the lower buckle. groove. The vascular clip applying device according to any one of claims 1 to 4, wherein a nail groove fixing piece is provided at the rear end of the track, and a nail groove fixing hole is penetrated in the nail groove fixing piece; The push rod assembly is provided with a sliding tube which is slidably sleeved around the nail groove and the nail feeding push rod, and the rear end of the jaw driving tube is fixedly connected to the sliding tube. At the front end, a sliding tube driving hole is penetrated laterally in the sliding tube, and the sliding tube driving hole is a long hole extending in the front-rear direction; a front section of the nail-feeding push rod is inserted in the track, and the nail-feeding push rod A rear end of the driving rod is provided with a driving rod for driving the nail, and a pushing clamp rod is arranged on the inner side of the rear section of the driving rod. The front end of the pushing rod penetrates into the track, corresponding to the driving hole of the sliding tube. Position, a driving pin driving hole is formed in the middle of the driving pin, the driving rod of the feeding pin abuts against the rear end of the driving pin, and the driving rod of the feeding pin and the rear end of the driving pin A tubular nail-in fixing shaft is sleeved, and the rear end of the nail-in fixing shaft is a closed end and the front end is combined A rear end of the pushing clamp rod is provided with a compressed nail input push rod buffer spring in the nail input fixing shaft, and the front end of the nail input push rod buffer spring abuts against the nail input push rod driving piece; on the track, A tubular handle combination seat is sleeved around the nail-feeding push rod, the pushing clamp rod, the nail-feeding fixing shaft and the sliding tube, and the front ends of the nail groove, the nail-feeding push rod and the jaw driving tube are forward. The handle combination seat is penetrated, and a fixing pin hole is horizontally passed through the front side of the handle combination seat in cooperation with the nail groove fixing hole. A fixing pin is inserted through the fixing pin hole and the nail groove fixing hole to cooperate with the sliding tube. The driving hole penetrates a driving pin avoidance hole in the middle of the handle combination seat. The drive pin avoidance hole is a long hole extending in the front-rear direction. A covering rod sliding sleeve is sleeved around the handle combination seat. A driving pin fixing hole is horizontally penetrated through the rod sliding sleeve, and a driving pin is penetrated and fixed in the driving pin fixing hole. The driving pin passes through the driving pin avoiding hole, the sliding tube driving hole, and the driving pin driving hole. The vascular clip applying device according to claim 5, wherein the front side and the back side of the drive pin avoidance hole respectively protrude inwardly on the inner peripheral surface of the handle combination seat to form a ring-shaped front flange and a ring-shaped A rear flange is formed on the rear side of the sliding tube, and a spring seat having a large outer diameter is formed on the rear side between the front flange and the rear flange, and is sleeved around the sliding tube. A sliding tube spring is provided, and the rear end and the front end of the sliding tube spring respectively abut the peripheral edge in front of the spring seat and the rear side of the front flange. According to the vascular clip applying device of claim 5, a plurality of guide blocks are protruded outwardly in a surrounding and spaced manner on an outer peripheral surface of a rear end portion of the nail-injection fixing shaft, and are formed at a rear end portion of the handle coupling seat. A tail section with a small outer diameter, a ring-shaped shoulder is formed on the periphery of the front side of the tail section, and a plurality of guide grooves are inserted in the tail section to match the positions of several guide blocks. A rear end of each guide groove is provided, and a return spring is sleeved around the tail section, and the return spring abuts between the outer ends of the guide blocks and the shoulder. According to the vascular clamp device of any one of claims 1 to 4, wherein four recessed portions are formed around the front end of the jaw driving tube according to the positions of the upper sides of the two upper front feet and the lower sides of the two lower front feet. According to the vascular clip applying device of claim 5, four recessed portions are formed around the front end of the jaw driving tube according to the positions of the upper sides of the two upper front feet and the lower sides of the two lower front feet.