CN107874827A - Plasma scalpel - Google Patents

Abstract

The invention discloses plasma scalpel,Including cable,Cutter head,Knife bar,Remote holder shank body,Defensive position shank body and two-chamber modeling pipe,Two contact rods are disposed with the two-chamber modeling pipe,Two-chamber modeling tube outer surface is cased with two pole snap rings,Each pole snap ring touches with a contact rod pressure respectively after the outer wall of pipe is moulded through two-chamber,Defensive position shank body includes rear body main casing,Upper buckle,Lower buckle and rear body bonnet,Lower buckle and upper buckle are arranged in rear body main casing,Two mutual disconnected snap ring cavitys are formed after upper buckle and lower buckle buckle,Cable includes the first wire and the second wire,After first wire and the second wire sequentially pass through rear body bonnet and lower buckle,Moulded after pipe separates two contact rods and insulated by two-chamber,First wire and the second wire touch realization with the pole snap ring pressure in snap ring cavity respectively and electrically connected,It instead of cable of the prior art and the technique of contact rod welding,Avoid tin welding,Dusty gas source is not produced,Noresidue lead class material.

Description

plasma scalpel

technical field

The invention relates to an instrument in the field of medical instrument research, in particular to a plasma scalpel.

Background technique

The existing (medical equipment) plasma surgical electrode, also known as: high-frequency surgical electric knife, needs to be manufactured in a clean workshop; however, the connection between the power supply wire and the electrode alloy rod needs to be soldered with a soldering iron at high temperature. Produce polluting gas sources; affect the stability of thin-walled insulating plastic pipes; lead residues will be produced; SUS304 solder needs to corrode the surface before welding, which greatly reduces the anti-rust performance of alloy SUS304; It is firm, and the impedance value exceeds the standard, which affects the plasma excitation performance; thereby increasing the quality risk of the device.

Contents of the invention

The object of the present invention is to provide a plasma scalpel, which does not require high-temperature soldering with a soldering iron and soldering iron between the power supply wire and the conductive rod, and does not generate polluting gas sources and no residual lead substances during its production process.

The solution of the present invention to solve its technical problems is: a plasma scalpel, including a cable, a cutter head, a knife rod, a front handle body and a rear handle body, and also includes a double-cavity plastic tube, in which two cavity plastic tubes are arranged. Conductive rod, the outer surface of the double-cavity plastic tube is covered with two pole snap rings, and each of the pole snap rings passes through the outer wall of the double-cavity plastic tube and presses with a conductive rod respectively. The rear handle body includes the rear body main body Shell, upper buckle, lower buckle and back cover of the rear body, the lower buckle and the upper buckle are installed in the main shell of the rear body, and the upper buckle and the lower buckle are buckled to form two mutually disconnected The snap ring cavity, the cable includes a first wire and a second wire, and after the first wire and the second wire pass through the back cover of the rear body and the lower buckle in turn, the first wire and the second wire are respectively connected with the embedded The pole snap ring presses in the snap ring cavity.

As a further improvement of the above technical solution, the lower buckle is provided with a groove, and the groove is divided into a first locking groove and a second locking groove by a partition block, and the first locking groove and the second locking groove are respectively arranged There is a through hole and a positioning hole, after one end of the first wire passes through the through hole of the first card slot, the end of the first wire is bent upward and inserted into the positioning hole of the first card slot, After one end of the second wire passes through the through hole of the second card slot, the end of the second wire is bent upward for several times and inserted into the positioning hole of the second card slot.

As a further improvement of the above technical solution, the bent end of the first wire is in contact with the corresponding pole snap ring, and the bent end of the second wire is in pressure contact with the corresponding pole snap ring.

As a further improvement of the above technical solution, a first protrusion protruding toward the conductive rod is formed on one of the pole snap rings, and after the first protrusion breaks through the side wall of the double-cavity plastic tube, one of the conductive rods is pressed into contact, and the remaining A second protrusion protruding toward the conductive rod is formed on one of the pole snap rings, and after the second protrusion breaks through the side wall of the double-cavity plastic tube, the remaining conductive rod is pressed into contact.

As a further improvement of the above technical solution, the tail end of the double-cavity plastic tube is sealed by plastic sealing, and the two conductive rods located in the double-cavity plastic tube pass through the head end of the double-cavity plastic tube and are connected to the corresponding cutter heads.

As a further improvement of the above technical solution, the middle part of one of the pole snap rings is impacted to form a first hole and a first annular flange located on the edge of the first hole and protruding toward the conductive rod, the first annular flange is the first a protrusion, and the middle part of the remaining pole snap ring is impacted to form a second hole and a second annular flange located on the edge of the second hole and protruding toward the conductive rod, and the second annular flange is a second protrusion.

As a further improvement of the above technical solution, the angle between the centerline of the first protrusion and the centerline of the second protrusion is 0-180°.

As a further improvement of the above technical solution, the angle between the center line of the first protrusion and the center line of the second protrusion is 0°, 30°, 45°, 60°, 90° and 180° A sort of.

As a further improvement of the above technical solution, a handle is also included, one end of the handle is fixed on the rear handle body, the other end of the handle is fixed on the front handle body, and a return spring is installed in the front handle body.

The beneficial effects of the present invention are: the present invention separates the two conductive rods through the double-cavity plastic tube and then insulates them, and the first wire and the second wire pass through the outer wall of the double-cavity plastic tube through the pole snap ring and are pressed against a conductive rod respectively. Contact, realize the electrical connection between the cable wire and the conductive rod, replace the welding process of the cable wire and the conductive rod in the prior art, avoid tin welding, do not generate polluting gas sources, and have no residual lead substances; can reduce the welding of SUS304 stainless steel pipes Corrosion process at the position; avoid dangerous chemical preparations from entering the factory; can standardize double-cavity plastic tubes and pole snap rings, and realize standardized parts production, assembly and inspection; reduce the risk of hidden quality risks when doctors use them.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings that need to be used in the description of the embodiments. Apparently, the described drawings are only some embodiments of the present invention, not all embodiments, and those skilled in the art can obtain other designs and drawings based on these drawings without creative work.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural representation of the rear handle body in the present invention;

Fig. 3 is a contact schematic diagram of the pole snap ring and the conductive rod pressing in the present invention;

Fig. 4 is a schematic diagram of the structure of the cable in the present invention.

Detailed ways

The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features and effects of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts belong to The protection scope of the present invention. In addition, all the connection/connection relationships mentioned in this article do not refer to the direct connection of components, but mean that a better connection structure can be formed by adding or reducing connection accessories according to specific implementation conditions.

With reference to Fig. 1～Fig. 4, plasma scalpel, comprises cable wire 6, cutter head 1, knife bar 2, front handle body 3 and rear handle body 4, also includes double-chamber plastic tube 53, in the double-chamber plastic tube 53 Two conductive rods are arranged, and the outer surface of the double-cavity plastic pipe 53 is covered with two pole snap rings. After passing through the outer wall of the double-cavity plastic pipe 53, each pole snap ring is respectively pressed into contact with a conductive rod. The handle body 4 includes a rear body main shell 57, an upper buckle 50, a lower buckle 56 and a rear body rear cover, and the lower buckle 56 and the upper buckle 50 are installed in the rear body main shell 57, and the upper buckle 50 and the lower buckle 56 are buckled to form two snap ring cavities that are not connected to each other. The cable 6 includes a first wire 61 and a second wire 62, and the first wire 61 and the second wire 62 pass through in turn. After passing through the rear body cover and the lower buckle 56, the first wire 61 and the second wire 62 respectively press-contact the pole snap ring embedded in the snap ring cavity. The two conductive rods are the first conductive rod 54 and the second conductive rod 55 respectively, and the two pole snap rings are the first pole snap ring 51 and the second pole snap ring 52 respectively.

The two conductive rods are separated by the double-cavity plastic tube 53 and then insulated. The first wire 61 and the second wire 62 pass through the outer wall of the double-cavity plastic tube 53 through the pole snap ring and then respectively press-contact with a conductive rod to realize the cable connection. The electrical connection with the conductive rod replaces the welding process of the cable wire and the conductive rod in the prior art, avoids tin welding, does not generate polluting gas sources, and has no residual lead substances; it can reduce the corrosion process of the welding position of the SUS304 stainless steel pipe; Prevent dangerous chemical preparations from entering the factory; standardize the double-cavity plastic tube 53 and the pole clasp to realize standardized parts production, assembly and inspection; reduce the risk of quality hazards when used by doctors.

Further as a preferred embodiment, the lower buckle 56 is arranged with a groove, and the groove is divided into a first card slot and a second card slot by a partition block, and the first card slot and the second card slot are respectively arranged There is a through hole and a positioning hole. After one end of the first wire 61 passes through the through hole of the first card slot, the end of the first wire 61 is bent upwards and inserted into the positioning hole of the first card slot multiple times. The position of the first wire 61 is fixed, and after one end of the second wire 62 passes through the through hole of the second slot, the end of the second wire 62 is bent upwards and inserted into the second slot for multiple times. The position of the second wire 62 is fixed in the hole.

As a further preferred embodiment, the bent end of the first wire 61 is in contact with the corresponding pole snap ring, and the bent end of the second wire 62 is in pressure contact with the corresponding pole snap ring. The bent end of the first wire 61 and the bent end of the second wire 62 are rectangular after being bent multiple times. After the rectangular bent end protrudes, the upper buckle 50 and the lower buckle 56 can be buckled together, and the pole snap ring can be tightly pressed against the corresponding wire to realize electrical conduction.

Further as a preferred embodiment, one of the pole snap rings is formed with a first protrusion protruding toward the conductive rod, and after the first protrusion breaks through the side wall of the double-chamber plastic tube 53, one of the conductive rods is pressed into contact, and the remaining A second protrusion protruding toward the conductive rod is formed on one of the pole snap rings, and after the second protrusion breaks through the side wall of the double-cavity plastic tube 53, the remaining conductive rod is pressed. The first protrusion and the protrusion are embedded into the corresponding conductive rod to achieve a good electrical connection between the two, and also prevent the conductive rod from moving in the double-cavity plastic tube 53 . The above impacts are all realized without affecting the strength of the conductive rod

Further as a preferred embodiment, the tail end of the double-cavity plastic tube 53 is blocked by plastic sealing, and the two conductive rods positioned in the double-cavity plastic tube 53 pass through the head end of the double-cavity plastic tube 53 and connect with the corresponding cutter head. 1 connection. Specifically, the head end of the double-cavity plastic tube 53 first passes through the front handle body 3 and the cutter bar 2 and is positioned at the front side of the cutter head 1, and the two conductive rods positioned in the double-cavity plastic tube 53 pass through the two-cavity plastic tube 53. The head end is then connected with the corresponding cutter head 1.

As a further preferred embodiment, after the middle part of one of the pole snap rings is impacted, a first hole and a first annular flange located on the edge of the first hole and protruding toward the conductive rod are formed, and the first annular flange is the first The second hole and the second annular flange located on the edge of the second hole and protruding toward the conductive rod are formed after the middle part of the remaining pole snap ring is impacted, and the second annular flange is a second protrusion. The first annular flange and the second annular flange are embedded into the corresponding conductive rods to achieve good electrical connection between the two, and also prevent the conductive rods from moving in the double-cavity plastic tube 53 . The above impacts are all realized on the premise of not affecting the strength of the conductive rod.

As a further preferred embodiment, the angle between the centerline of the first protrusion and the centerline of the second protrusion is 0-180°. The included angle between the center line of the first protrusion and the center line of the second protrusion is one of 0°, 30°, 45°, 60°, 90° and 180°. Of course, the distribution of the first protrusions and the second protrusions can be set as required.

Further as a preferred embodiment, it also includes a handle 4, one end of the handle 4 is fixed on the rear handle body 4, the other end of the handle 4 is fixed on the front handle body 3, and a return spring is installed in the front handle body 3 . The handle 4 is U-shaped. When in use, the operator holds the handle 4 tightly and presses hard to drive the rear handle body 4 close to the front handle body 3. The rear cutter head 1 works. After the hand is released, the return spring makes the rear handle body 4 far away from the front handle body 3.

The lower buckle 56 is made of engineering plastic series (PA+LCP+PBT+ equal ratio) with insulation, temperature resistance, fire prevention and good performance; the innovative structural design path groove shape is used for the first wire 61 and the second wire 62 pass through the fixed cable to achieve the designed structure; the first conductive rod 54 and the first conductive rod 54 are inserted into the double-cavity plastic tube 53, and the tail is fixed by plastic sealing; Use a jig for positioning; punch out the first protrusion through the outer wall of the double-cavity plastic tube 53 in the direction of the first conductive rod 54 with a mold for metal stamping equipment, and then punch out the second conductive rod 55 in the opposite direction to form the second protrusion through The outer wall of the double-cavity plastic tube 53; after the process is completed, it is called: the electrode conductor of the double-cavity tube; do the current withstand voltage and impedance test; the first wire 61 and the second wire 62 of the cable are peeled and inserted into the lower buckle respectively 56 fixed in the first slot and the second slot; the electrode conductor of the double-cavity tube is placed at the designated position of the lower buckle 56 as a whole, so that the first pole snap ring 51 is located in the first slot, and the second pole snap ring 52 is located in the second slot. Card slot; then press the buckle 50 tightly so that the first wire 61 and the second wire 62 are tightly matched with the first pole snap ring 51 and the second pole snap ring 52 respectively; the whole body is put into the main shell 57 of the rear body of the handle 4 , Tighten the main shell after passing the cable through the center hole of the nut on the back cover, so that the connection relationship will not be loosened.

The above is a specific description of the preferred embodiments of the present invention, but the invention is not limited to the described embodiments, those skilled in the art can also make various equivalent modifications or replacements without violating the spirit of the present invention , these equivalent modifications or replacements are all included within the scope defined by the claims of the present application.

Claims (9)

1. Plasma scalpel, including cable, cutter head, knife rod, front handle body and rear handle body, is characterized in that: also comprises double-cavity plastic pipe, is arranged with two conductive rods in described double-cavity plastic pipe, double-cavity plastic pipe The outer surface of the plastic tube is covered with two pole snap rings, and each of the pole snap rings passes through the outer wall of the double-cavity plastic tube and touches with a conductive rod respectively. The rear handle body includes the rear body main shell, the upper buckle , the lower buckle and the back cover of the rear body, the lower buckle and the upper buckle are installed in the main shell of the rear body, and the upper buckle and the lower buckle are buckled to form two snap ring cavities that are not connected to each other , the cable includes a first wire and a second wire, and after the first wire and the second wire pass through the back cover of the rear body and the lower buckle in turn, the first wire and the second wire are respectively embedded in the snap ring cavity The pole snap ring in the press contacts. 2. The plasma scalpel according to claim 1, characterized in that: the lower buckle is arranged with a groove, the groove is divided into a first groove and a second groove by a partition block, the first groove A through hole and a positioning hole are respectively arranged in the slot and the second draw-in slot. After one end of the first wire passes through the through-hole of the first draw-in slot, the end of the first wire is bent upwards and inserted into the In the positioning hole of the first slot, after one end of the second wire passes through the through hole of the second slot, the end of the second wire is bent upwards several times and inserted into the positioning hole of the second slot. 3. The plasma scalpel according to claim 2, characterized in that: the bent end of the first wire is in contact with the corresponding pole snap ring, and the bent end of the second wire is pressed against the corresponding pole snap ring. touch. 4. The plasma scalpel according to any one of claims 1-3, characterized in that: one of the pole snap rings forms a first protrusion protruding toward the conductive rod, and the first protrusion breaks through the double cavity One of the conductive rods is pressed against the side wall of the plastic tube, and a second protrusion protruding to the conductive rod is formed on the remaining pole snap ring. After the second protrusion breaks through the side wall of the double-cavity plastic tube, the remaining one is conductive. stick pressing touch. 5. The plasma scalpel according to claim 4, characterized in that: the tail end of the double-cavity plastic tube is sealed by plastic sealing, and the two conductive rods located in the double-cavity plastic tube pass through the head end of the double-cavity plastic tube Then connect with the corresponding cutter head. 6. The plasma scalpel according to claim 4, characterized in that: the middle part of one of the pole snap rings is impacted to form a first hole and a first annular flange located on the edge of the first hole and protruding toward the conductive rod, The first annular flange is a first protrusion, and the middle part of the remaining pole snap ring is impacted to form a second hole and a second annular flange located on the edge of the second hole and protruding toward the conductive rod. The second annular The raised edge is the second protrusion. 7. The plasma scalpel according to claim 4, characterized in that: the included angle between the centerline of the first protrusion and the centerline of the second protrusion is 0-180°. 8. The plasma scalpel according to claim 7, characterized in that: the included angles between the center line of the first protrusion and the center line of the second protrusion are 0°, 30°, 45°, 60° °, 90° and 180°. 9. The plasma scalpel according to any one of claims 1 to 3, characterized in that: it also includes a handle, one end of the handle is fixed on the rear handle body, and the other end of the handle is fixed on the front handle body, so A return spring is installed in the front handle body.