TWI760736B - Suture cutting knife used with minimally invasive surgical instrument - Google Patents

Abstract

A suture cutting knife used with minimally invasive surgical instrument includes a clamp hole and a side hole that are in communication for clamping the rod body of the minimally invasive surgical instrument. The main body includes a rod edge and a side edge on two ends along the passing direction of the clamp hole, with a cutting portion formed on the rod edge or the side edge. Upon clamping the rod body, the main body perfectly fits the on the rod body to be positioned thereon, so as to be combined with the rod body, facilitating a conjunction operation of the two. After the seam is complete, excess suture is directed from between the main body and the rod body to the cutting portion, such that the rod body is moved to cut the suture.

Description

Suture cutting tool for use with minimally invasive surgical instruments

The present invention relates to a surgical instrument, especially a suture cutting tool used with a minimally invasive surgical instrument.

In the process of minimally invasive surgery, only a few small hole-shaped wounds need to be opened on the patient, so that the minimally invasive surgical instruments can be inserted into the patient's body. With the help of endoscopy and imaging technology, the surgeon can clearly see the affected part for operation. Surgery, minimally invasive surgery has become quite popular at this stage.

When performing minimally invasive surgery, surgeons must rely on the use of minimally invasive surgical instruments. Taking gastrointestinal wound suture during surgery as an example, surgeons generally open three small hole-shaped wounds on the patient, two of which are for the minimally invasive surgery. The needle forceps are inserted into the patient's body to hold the needle for suture, and the other wound is to let the endoscope (including illumination) enter the patient's body to capture the image of the affected part. The minimally invasive device with thread-cutting function enters the patient's body to cut off the remaining sutures, which will cause a delay in the operation time; another method is to open a small hole-shaped wound on the patient's body for the thread-cutting function. Minimally invasive instruments enter the patient's body to cut off the remaining sutures, but this practice will inevitably create more wounds on the patient's body.

Therefore, how to solve the above-mentioned problems of minimally invasive surgery is the main focus of the present invention exist.

In order to solve the above problem, the present invention provides a suture cutting tool used with a minimally invasive surgical instrument, which can be buckled on the original minimally invasive surgical instrument to increase the function of cutting surgical sutures.

An embodiment of the present invention provides a suture cutting tool, which can be buckled and used on a minimally invasive surgical instrument. The minimally invasive surgical instrument is a rod body with a control part and an actuation part at both ends respectively. The control part can be held by hand, and the end of the rod body with the actuating part can be inserted into the patient's body to perform suture operation. The side opening is open to the opening side, the side opening is connected with the button hole, the body has an edge on both ends of the button hole in the direction of penetration, and the body has a side edge on both sides of the side opening respectively, and the body has two end edges and two sides. At least one of the edges is provided with a cutting part, and the rod body is buckled into the button hole through the side opening at the position adjacent to the actuating part, so that the body fits the positioning rod body. The gap is introduced to the cutting part, and the rod is moved to cut the suture.

In one embodiment, the main body is approximately C-shaped and straight cylindrical, and the covering area of the main body when the rod body is positioned slightly exceeds more than half of the rod surface of the rod body.

In one embodiment, both the two end edges and the two side edges have arc chamfers.

In one embodiment, the cutting portion is disposed at at least one of the two end edges, and the position of the cutting portion is close to the side opening.

In one embodiment, the main body has the cutting portions at two positions, and the cutting portions at the two positions are symmetrically positioned at the provided end edges and are respectively close to the two side edges of the side opening.

In one embodiment, the cutting portion is set at at least one of the two side edges, and the position of the cutting portion is The edge close to one end of the body.

In one embodiment, the main body has two cutting portions, and the two cutting portions are located symmetrically on the provided side edges and are respectively close to an end edge of one end of the main body.

In one embodiment, the cutting portion is disposed on the end edge or the side edge of the main body and has an inner bevel and an outer bevel, and a sharp blade portion is formed between the inner bevel and the outer bevel.

In one embodiment, the main body has two cutting parts, one cutting part is set at one of the two end edges and is located close to the side opening, and the other cutting part is set at one of the two side edges and is located close to the side opening. The edge of one end of the body.

In one embodiment, the body is integrally formed, and the cutting portion is U-shaped.

Therefore, during the minimally invasive surgery, the minimally invasive surgical instrument can be installed with the suture cutting tool of the present invention before the minimally invasive surgical instrument is inserted into the body of the patient. Physically, the minimally invasive surgical instrument will not cause damage to the body tissue when operating in the body, and when the operation is completed and the suture needs to be cut, it is only necessary to introduce the excess suture from the body and the rod body to the cutting The suture can be cut by moving the rod body, and the operation of suture and suture cutting can be carried out with the same minimally invasive surgical instrument, so that the minimally invasive surgery can be completed faster without increasing the effect of the wound.

100: Minimally Invasive Surgical Instruments

101: Rod body

102: Control Department

103: Action Department

10: Ontology

11: button hole

12: side opening

13: end edge

14: side edge

15: Cutting part

151: Inner bevel

152: External Bevel

153: Blade

A: wound

B: suture

C: gap

FIG. 1 is a schematic diagram of the use state of the suture cutting tool installed in the minimally invasive surgical instrument according to the first embodiment of the present invention.

FIG. 2 is a schematic diagram of the installation of the suture cutting tool on the minimally invasive surgical instrument according to the first embodiment of the present invention.

3 is a three-dimensional external view of the suture cutting tool according to the first embodiment of the present invention.

4 is a cross-sectional structural view of the suture cutting tool according to the first embodiment of the present invention.

5 is a schematic top view of the structure when the suture cutting tool according to the first embodiment of the present invention is installed on the rod body of the minimally invasive surgical instrument.

6 is a schematic view of the use state of the suture cutting tool according to the first embodiment of the present invention when it is installed on the rod body of the minimally invasive surgical instrument.

Fig. 7 is a diagram showing the suture shown in Fig. 6 being pulled out backward from the rod body of the minimally invasive surgical instrument and being cut by the introduction and cutting portion.

8 is a three-dimensional external view of a suture cutting tool according to a second embodiment of the present invention.

9 is a schematic diagram of the use state of the suture cutting tool according to the second embodiment of the present invention when it is installed on the rod body of the minimally invasive surgical instrument.

Fig. 10 is a diagram showing the suture shown in Fig. 9 being pulled out from the rod body of the minimally invasive surgical instrument and then being cut by the cutting portion.

11 is a three-dimensional external view of a suture cutting tool according to a third embodiment of the present invention.

FIG. 12 is a perspective view of the suture cutting tool according to the fourth embodiment of the present invention.

13 is a perspective view of the suture cutting tool according to the fifth embodiment of the present invention.

In order to facilitate the description of the central idea of the present invention expressed in the column of the above-mentioned summary of the invention, specific embodiments are hereby expressed. Various objects in the embodiments are drawn according to proportions, sizes, deformations or displacements suitable for description, rather than the proportions of actual elements, which will be described first.

Please refer to FIG. 1 to FIG. 13 , the present invention provides a suture cutting tool used with a minimally invasive surgical instrument. The minimally invasive surgical instrument 100 used is a rod body 101 , which is located at both ends of the rod body 101 . It has a control part 102 and an actuation part 103 respectively. The operator can hold the control part 102 and extend the end of the rod body 101 with the actuation part 103 into the patient's body to perform surgery. The following is a description of the first embodiment, in which the minimally invasive surgical instrument 100 used is a minimally invasive needle-holding forceps, the actuating portion 103 of which is used for holding the needle and pulling the suture to sew the wound.

The suture cutting tool includes a body 10 , which is integrally formed in this embodiment, and has a button hole 11 and an opening 12 on one side. The button hole 11 is formed along the axial direction of the body 10 . The side opening 12 is opened in the radial direction of the main body 10, and the side opening 12 and the button hole 11 are communicated. The body 10 has two end edges 13 and two side edges 14. The two end edges 13 are at the two ends of the body 10 in the direction in which the button hole 11 is inserted, and the two side edges 14 are at the two sides of the body 10 at the side opening 12. .

On top, the main body 10 has a cutting portion 15 , and the cutting portion 15 may be at least one of the two end edges 13 , or at least one of the two side edges 14 . In a preferred embodiment, the main body 10 is substantially C-shaped and is straight cylindrical, and both the two end edges 13 and the two side edges 14 have rounded chamfers. As shown in FIG. 5 , the body 10 is positioned on the rod body 101 of the minimally invasive surgical instrument 100 , wherein the body 10 covers more than half of the rod surface of the rod body 101 when the body 10 is positioned on the rod body 101 (ie, the circumference of the rod body 101 ) The length of the surface), so that the main body 10 can be stably fixed on the rod body 101 without falling off easily.

The cutting portion 15 has two places in the main body 10 in this embodiment. In the first embodiment, the cutting portion 15 at the two places is provided at one end edge 13 , and the cutting portion 15 at the two places is provided at the The position of the end edge 13 is symmetrical, and the two cutting portions 15 are respectively close to the two side edges 14 of the side opening 12 . The cutting portion 15 in this embodiment is U-shaped, and the end edge 13 of the main body 10 has an inner bevel 151 and an outer bevel 152, and a sharp blade portion 153 is formed with the inner bevel 151 and the outer bevel 152. 152 rooms. As shown in FIG. 5 , when the main body 10 is positioned on the rod body 101 , as both the end edge 13 and the two side edges 14 have arc chamfers, a gap C is left between the main body 10 and the rod body 101 to allow the suture Through the gap C, it can easily protrude between the main body 10 and the rod body 101, In order to facilitate the introduction of the suture to the cutting portion 15 .

When the body 10 of the suture cutting tool is to be installed on the rod body 101 of the minimally invasive surgical instrument 100, the position of the rod body 101 adjacent to the actuating part 103 is fastened into the button hole 11 through the side opening 12 of the body 10, At this time, the main body 10 can be positioned on the rod body 101 compliantly, and during the operation, the main body 10 can extend into the patient's body along with the end of the rod body 101 having the actuating portion 103 . When the main body 10 is positioned on the rod body 101 , it is customarily installed with the cutting part 15 facing away from the actuating part 103 . When the cutting part 15 cuts the suture, the rod body 101 is pulled back.

As shown in FIG. 6 , after the two minimally invasive surgical instruments 100 are suturing the wound A in the patient with sutures B, the operator can hold the remaining sutures with the actuating portion 103 of one of the minimally invasive surgical instruments 100 . B, and the suture B is introduced into the cutting part 15 from between the body 10 and the rod body 101 of the other minimally invasive surgical instrument 100, and then the operator only needs to withdraw the minimally invasive surgical instrument 100 backwards , the rod body 101 can be moved to face the suture B with the cutting portion 15, and the suture B can be cut as shown in FIG.

It is not difficult to find the characteristics of the present invention from the above-mentioned description, which is:

1. The suture cutting tool of the present invention, in order to match the original function of the minimally invasive surgical instrument and make specific improvements, is an additive-type surgical instrument with deep design functions, and can be installed in any microscopic device with a rod body. on surgical instruments. In the process of minimally invasive surgery, before the minimally invasive surgical instrument 100 is inserted into the body of the patient, the body 10 can be mounted on the rod body 101 adjacent to the actuating part 103, which functions like surgical scissors and can be used for suturing the wound. After the action is completed, it is used to cut off the excess suture B. Compared with the conventional method, the scissors must be replaced by entering the affected part to cut the suture B and then take it out. The instrument 100 performs the operations of suturing and cutting the suture B at the same time, which can achieve the effect of speeding up the completion of the minimally invasive surgery without increasing the effect of the wound.

2. Since the main body 10 is positioned obediently on the rod body 101 of the minimally invasive surgical instrument 100, the main body 10 is connected with the rod body 101, that is, the cutting part 15 is adjacent to the rod surface of the rod body 101 and does not protrude outside, Therefore, when the minimally invasive surgical instrument 100 is operated in the patient's body, the body 10 will not cause damage to the body tissue.

3. When the operation is completed, it is only necessary to introduce the excess suture B from between the main body 10 and the rod body 101 to the cutting part 15, and then move the rod body 101 to take the main body 10 and use the cutting part 15 to cut the suture. B cutting, in which the rod body 101 is moved backward in the withdrawing direction to cut the suture B, which can avoid accidentally injuring the tissue around the affected part.

4. The two parts of the same body 10 have the symmetrical design of the cutting parts 15, which allows the operator to select a preferred cutting part 15 to cut the suture during the operation, so that the cutting action of the suture B is more convenient.

5. After the main body 10 is positioned on the rod body 101, it can be removed from the rod body 101. Therefore, the main body 10 can be autoclaved, or it can be a disposable design, that is, it can be discarded after one use, so as to take into account the hygiene and safety of the operation process. .

6. The main body 10 has the design of the cutting part 15, in addition to the operation of cutting the suture B, it can also be used to cut the adhering tissue when necessary, so as to increase the function of the present invention.

There are still different embodiments of the present invention. As shown in FIG. 8 to FIG. 10 , it is a suture cutting tool according to the second embodiment of the present invention, which has a body 10 like the first embodiment, and also has a button hole 11, a side The opening 12 , the two end edges 13 , the two side edges 14 and the two cutting parts 15 , but the main difference from the first embodiment is that one of the two cutting parts 15 in this embodiment is set on the end edge 13 , The other one is provided on the side edge 14, wherein the cutting portion 15 provided on the end edge 13 is located close to the side opening 12, and the other cutting portion 15 provided on the side edge 14 is located close to the end edge 13 at one end of the main body 10, and The two cutting portions 15 are fastened on opposite sides of the main body 10 .

As shown in FIG. 9 , in order to use two minimally invasive surgical instruments 100 to suture the wound A in the patient's body with sutures B as in the first embodiment, the operator can use the actuating part of one of the minimally invasive surgical instruments 100 103 holds the remaining suture B, and in this embodiment, the suture B is guided from between the body 10 and the shaft 101 of the other minimally invasive surgical instrument 100 to the cutting portion 15 located on the side edge 14 Then, the operator only needs to move the minimally invasive surgical instrument 100 along the cutting direction of the cutting part 15, that is, the cutting part 15 can face the suture B, and cut the suture B as shown in FIG. The suture action of wound A.

It can be seen from the description of the second embodiment that the cutting portions 15 of the main body 10 of the present embodiment are respectively disposed at the edge end 13 and the side edge 14 , except that the same effect as the first embodiment can be achieved, it is also The operator can use the cutting part 15 at the edge 13 or the side edge 14 to cut the suture B on the affected part. Therefore, the cutting part 15 at different positions can be used to cut the suture B after the suture is finished. Better flexibility and convenience during operation.

As shown in FIG. 11 , it is a suture cutting tool according to the third embodiment of the present invention. Like the second embodiment, it has a main body 10 , a button hole 11 , a side opening 12 , two end edges 13 , and two side edges. 14 and the two cutting parts 15, the cutting part 15 at the second place in this embodiment is also one is set on the end edge 13, and the other is set on the side edge 14, wherein the cutting part 15 set on the end edge 13 is the position Close to the side opening 12 , another cutting portion 15 provided on the side edge 14 is located close to the end edge 13 of one end of the main body 10 , but the main difference from the second embodiment is that the two cutting portions 15 are opposite to the main body 10 . Assuming that the position is the same side, the action of cutting the suture B can be implemented as the first and second embodiments, and the same effect as the first embodiment can also be achieved, and the operator can choose the edge on the affected part. 13 or the cutting portion 15 of the side edge 14 cuts the suture B after the stitching is completed, so as to achieve better flexibility and convenience during operation by the cutting portion 15 at different positions as described in the second embodiment.

As shown in FIG. 12, it is a suture cutting tool according to the fourth embodiment of the present invention, which has a main body 10 like the first embodiment, and also has a button hole 11, a side opening 12, two end edges 13, and two side edges. 14 and the two cutting portions 15, but the main difference from the first embodiment is that the second cutting portion 15 in this embodiment is provided on the two side edges 14, and the two cutting portions 15 are located at the provided side edges 14. Also symmetrical, the two cutting portions 15 are respectively close to the end edge 13 of one end of the main body 10, and the action of cutting the suture B can be the same as that of the second embodiment. Although the position of the cutting portion 15 in the main body 10 in this embodiment is different from that in the previous embodiment, through the operation of the minimally invasive surgical instrument 100, the suture B can also be cut by the cutting portion 15 of the side edge 14, so as to achieve a The same effect as the first embodiment.

As shown in FIG. 13 , it is a suture cutting tool according to the fifth embodiment of the present invention. Like the first embodiment, it has a main body 10 , a button hole 11 , a side opening 12 , two end edges 13 and two side edges. 14. The main difference from the previous embodiment is that in this embodiment, the main body 10 has four cutting parts 15, two of which are located at the two end edges 13, and the other two cutting parts 15 are located at On the two side edges 14 , the cutting portions 15 located at the two end edges 13 are located opposite to the side opening 12 ; the other cutting portions 15 located at the two side edges 14 are located opposite to the end edge 13 located at one end of the main body 10 . set up. The suture cutting tool of this embodiment can operate as the minimally invasive surgical instrument 100 of the previous embodiment, and can also cut the suture B by any cutting portion 15 of the end edge 13 or the side edge 14, so as to achieve the same performance as the previous embodiment. described effect.

As can be seen from the descriptions of the first to fifth embodiments above, the suture cutting tool of the present invention, the body 10 of the suture cutting tool of the present invention can have two cutting portions 15 disposed on the end edge 13 as in the first embodiment, or as the second embodiment. In the third embodiment, there are two cutting parts 15 on opposite sides or the same side, respectively, on the end edge 13 and the side edge 14, or as in the fourth embodiment, there are two cutting parts 15 on the side edge 14. , or as in the fifth embodiment, there are four cutting parts 15 respectively arranged on the end edge 13 and the side edge 14, these embodiments are only to illustrate the different implementations of the suture cutting tool of the present invention, but the present invention does not only Limited to these embodiments, where the body 10 is at both ends The edge 13 and/or the two side edges 14 provided with the cutting portions 15, regardless of the number and/or position of the main body 10, are within the protection scope of the present invention.

The above-mentioned embodiments are only used to illustrate the present invention, but not to limit the scope of the present invention. All the modifications or changes that do not violate the spirit of the present invention belong to the intended protection category of the present invention.

101: Rod body

103: Action Department

10: Ontology

11: button hole

12: side opening

13: end edge

14: side edge

15: Cutting part

Claims (10)

A suture cutting tool used in conjunction with a minimally invasive surgical instrument, the minimally invasive surgical instrument is a rod body with a control part and an actuation part at both ends respectively, the operator can hold the control part and use the rod body to have the actuation part One end of the suture is inserted into the body of the patient for suturing, the suture cutting tool comprises a body, the body has a button hole pierced in the axial direction, and has a side opening opened in the radial direction, the side opening and The button holes are communicated with each other, the body has an edge on both ends of the button hole in the direction of penetration, and the body has a side edge on both sides of the side opening, and the body is on the two end edges and the two side edges. At least one of them is provided with a cutting part, and the rod body is buckled into the button hole through the side opening through the part adjacent to the actuating part, so that the body can be positioned to the rod body, and the excess suture after the suturing operation can be removed. It is introduced into the cutting part from between the main body and the rod body, and the rod body is moved to cut the suture. The suture cutting tool used in conjunction with a minimally invasive surgical instrument as claimed in claim 1, wherein the main body is approximately C-shaped and straight cylindrical, and the range covered by the main body when the rod body is positioned slightly exceeds the rod body More than half of the club face. The suture cutting tool used in conjunction with a minimally invasive surgical instrument according to claim 2, wherein both the two end edges and the two side edges have arc chamfers. The suture cutting tool used in conjunction with a minimally invasive surgical instrument according to claim 3, wherein the cutting portion is provided at at least one of the two end edges, and the cutting portion is located close to the side opening. The suture cutting tool used in conjunction with a minimally invasive surgical instrument according to claim 4, wherein the main body has the cutting portion at two positions, and the two cutting portions are located symmetrically at the provided end edges and are respectively close to the side opening the two side edges. The suture cutting tool for use with minimally invasive surgical instruments according to claim 3, wherein the cutting portion is provided at at least one of the two side edges, and the cutting portion is located close to one end of the main body the edge. The suture cutting tool used in conjunction with a minimally invasive surgical instrument according to claim 6, wherein the main body has the cutting portion at two positions, and the two cutting portions are located symmetrically on the provided side edges and are respectively close to one end of the main body. the edge. The suture cutting tool for use with minimally invasive surgical instruments as claimed in claim 1, wherein the cutting portion is disposed on the end edge or the side edge of the main body and has an inner bevel and an outer bevel, and the inner bevel is A sharp blade portion is formed between the inclined surface and the outer inclined surface. The suture cutting tool for use with minimally invasive surgical instruments according to claim 3, wherein the main body has two cutting portions, and one of the cutting portions is located at one of the two end edges and is located close to the side opening, The other cutting part is arranged at one of the two side edges and is located close to the end edge of one end of the main body. The suture cutting tool used in conjunction with a minimally invasive surgical instrument according to claim 1, wherein the body is integrally formed, and the cutting portion is U-shaped.

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