CN108420479B - Tissue suture forceps for endoscopic surgery - Google Patents
Tissue suture forceps for endoscopic surgery Download PDFInfo
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- CN108420479B CN108420479B CN201810313894.8A CN201810313894A CN108420479B CN 108420479 B CN108420479 B CN 108420479B CN 201810313894 A CN201810313894 A CN 201810313894A CN 108420479 B CN108420479 B CN 108420479B
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- forceps
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- spring
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- 238000002674 endoscopic surgery Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 72
- 230000005540 biological transmission Effects 0.000 claims abstract description 58
- 238000007789 sealing Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002682 general surgery Methods 0.000 description 1
- 238000002357 laparoscopic surgery Methods 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0469—Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0482—Needle or suture guides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0483—Hand-held instruments for holding sutures
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0487—Suture clamps, clips or locks, e.g. for replacing suture knots; Instruments for applying or removing suture clamps, clips or locks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
- A61B17/0491—Sewing machines for surgery
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a tissue suture forceps for endoscopic surgery, which comprises a handle mechanism, a connecting tube, a transmission rod, a traction rope and a forceps head. The handle mechanism comprises a handle bracket, a fixed handle, a first movable handle and a second movable handle. The connecting tube is arranged on the handle bracket. The transmission rod passes through the connecting tube and the two ends are respectively connected with the first movable handle and the opening and closing mechanism of the clamp head. Suture needle grasping mechanisms are arranged in the two forceps petals of the forceps head. The two ends of the traction rope which passes through the connecting pipe are respectively connected with a second movable handle and a suture needle grasping mechanism. The two forceps petals of the forceps head are needle tail forceps petals and needle head forceps petals respectively. When the traction rope is tensioned, the suture needle grasping mechanism of the needle head forceps valve grasps the suture needle, and the suture needle grasping mechanism of the needle tail forceps valve is loosened; when the traction rope is loosened, the suture needle grasping mechanism of the needle tail forceps valve grasps the suture needle, and the suture needle grasping mechanism of the needle head forceps valve is loosened.
Description
Technical Field
The present invention relates to surgical instruments.
Background
When tissue suturing is performed in thoracoscopic or laparoscopic surgery, a doctor generally clamps the suture needle through a clamp to pierce the tissue and drive the suture to perform tissue suturing back and forth. This procedure requires a high level of skill from the surgeon. The surgeon first grasps the tail of the needle with forceps and then pierces the needle tip of the needle into the tissue. After the needle tip of the suture needle pierces the tissue, the surgeon's forceps need to open the needle tail of the suture needle, then grasp the needle tip of the suture needle with the forceps to the other side of the tissue, and pull the suture needle out to pass the suture through the tissue. In general surgery, such steps are not complicated, but the above-described operations under the endoscopic surgery become very complicated. Particularly in the case of soft but hard surfaces, the suture needle gives way to the tissue when it is pierced, resulting in difficulty in penetrating the tissue. Thus, a simple surgical suture often takes 2 to 3 hours.
Disclosure of Invention
The invention aims to solve the problem that the operation requirement on doctors is high when tissue suture is performed in endoscopic surgery.
In order to solve the problems, the invention adopts the following scheme:
a tissue suture forceps for endoscopic surgery comprises a handle mechanism, a connecting tube, a transmission rod, a traction rope and a forceps head; the handle mechanism is arranged at the rear end of the connecting pipe; the clamp head is arranged at the front end of the connecting pipe; the connecting pipe is hollow and provided with an axial pipe cavity; the transmission rod and the traction rope penetrate through a lumen in the connecting pipe, and the front end and the rear end are respectively connected with the clamp head and the handle mechanism; the handle mechanism comprises a handle bracket, a fixed handle, a first movable handle and a second movable handle; the upper part of the handle bracket is fixed with the connecting pipe; the fixed handle is arranged below the handle bracket; the first movable handle is arranged at the rear of the handle bracket through a first rotating shaft and is positioned at the rear of the fixed handle; the first movable handle is provided with a connecting part and is movably connected with the transmission rod through the connecting part, so that the transmission rod is driven to move forwards and backwards when the first movable handle rotates around the first rotating shaft; the second movable handle is arranged on the handle bracket through a second rotating shaft and positioned in front of the fixed handle; the second movable handle is bound with the traction rope, so that the traction rope can be pulled when the second movable handle rotates around the second rotating shaft; the forceps head comprises two forceps petals; the two forceps petals are respectively a needle head forceps petal and a needle tail forceps petal; the forceps flap comprises a driving part and a forceps head part; the driving part is provided with a shaft hole and is arranged at the front end of the connecting pipe through the shaft hole, so that the clamp valve can rotate around the axis of the shaft hole; the driving part is connected with a transmission rod through a transmission mechanism; the transmission mechanism drives the two clamp petals to rotate around the axle center of the axle hole when the transmission rod moves forwards and backwards, so that the clamp head is opened or closed; the clamp head part comprises a clamp head box with a clamp panel; when the clamp head is closed, the clamp panels of the two clamp petals are mutually attached; the pincer panel is provided with a pinhole; pinholes on the jaw panels of the two jaw are oppositely arranged; a needle propping block, a spring sliding block and a needle pressing block are arranged in the clamp head box; the needle propping block is provided with a needle pressing slideway; the needle hole is communicated with the bottom of the needle pressing slideway; the spring sliding block is connected with a spring mechanism and is bound with the traction rope; the direction of the acting force given to the spring sliding block by the spring mechanism is opposite to the direction of the pulling rope pulling the spring sliding block; the spring sliding block is connected with the needle pressing block; the needle pressing block is positioned in the needle pressing slide way and can press the bottom of the needle pressing slide way; when the needle pressing block presses the bottom of the needle pressing slideway, the suture needle placed in the needle hole can be pressed, so that the suture needle is gripped; in the needle tail forceps valve, the needle pressing block is pressed to the bottom of the needle pressing slideway by the acting force of the spring mechanism; in the needle forceps valve, the needle pressing block is pressed to the bottom of the needle pressing slideway through the traction force of the traction rope.
Further, the transmission mechanism comprises an inclined groove arranged on the driving part and a sliding rod arranged at the front end of the transmission rod; the two sliding rods at the front end of the transmission rod are clamped in the two oblique grooves of the two clamp flap driving parts; the sliding rod can slide in the inclined groove along the inclined groove; the transmission rod moves forwards and backwards, and the clamp valve is driven to rotate around the axis of the shaft hole through the interaction of the sliding rod and the inclined groove.
Further, the driving part includes a driving plate; the driving plate is vertical to the clamp panel; the drive plate is divided into four areas, namely: the clamping area, the first channel area, the second channel area and the chute area; wherein, the thickness of the clamping area is thicker and protrudes inwards; the first channel region and the second channel region are respectively positioned at two sides of the clamping region; the chute area is positioned at the rear side of the clamping area; the shaft hole is positioned in the clamping area; the inclined groove is positioned in the inclined groove area; the clamping areas of the two clamp valve driving parts are oppositely arranged, so that a transmission cavity is formed between the chute areas of the two clamp valve, and the first channel area of one clamp valve and the second channel area of the other clamp valve form a traction rope channel; the front end of the transmission rod is positioned in the transmission cavity; the hauling cable passes through the hauling cable channel and the transmission cavity.
Further, the first channel area is provided with two guide wheels; a traction rope groove is formed in the wheel surface of the guide wheel; the two guide wheels are respectively: a first guide wheel and a second guide wheel; the traction rope passes through the space between the first guide wheel and the second guide wheel.
Further, the second channel region is provided with a first wheel groove and a second wheel groove which are matched with the first guide wheel and the second guide wheel, so that the first guide wheel and the second guide wheel of one clamp flap can slide along the first wheel groove and the second wheel groove of the other clamp flap respectively.
Further, the binding clip box comprises a front end plate, a cover plate and two side panels; the forceps panel, the front end plate, the cover plate and the two side panels form a forceps head cavity with an opening at the rear end; the needle propping block, the spring sliding block and the needle pressing block are positioned in the clamp head cavity; the needle propping block is arranged on the forceps panel and is positioned between the spring sliding block and the front end plate; in the needle tail forceps valve, a needle pressing slideway is opened to a spring sliding block, and a needle pressing block is arranged at the front end of the spring sliding block; in the needle forceps valve, a needle pressing slideway is opened towards the front end plate, and a needle pressing block is arranged on the linkage plate; the linkage plate is positioned between the front end plate and the needle abutting block; the spring sliding block is connected with the linkage plate through two linkage rods on two sides of the needle supporting block.
Further, the spring mechanism is two traction springs arranged in spring grooves on two sides of the needle propping block; one end of the traction spring is connected with the front end plate, and the other end of the traction spring is connected with the spring sliding block.
Further, an abutting needle plate is arranged on the abutting needle block, and when the stitching needle penetrates into the bottom of the needle pressing slideway through the needle hole, the stitching needle can be abutted against the abutting needle plate; the front end of the needle pressing block is provided with a needle pressing soft cushion.
Further, a handle cavity and a traction cavity are arranged in the handle bracket; the second movable handle is connected with a return spring; the part where the return spring, the second movable handle and the traction rope are bound and the part where the second movable handle and the second rotating shaft are fixed are positioned in the handle cavity; the hauling rope penetrates into the handle cavity after penetrating through the hauling cavity through the lateral opening of the connecting pipe.
Further, a sealing groove is arranged in the traction cavity; a sealing plug is arranged in the sealing groove; the hauling cable passes through the sealing plug in the sealing groove.
The invention has the following technical effects:
1. with the tissue suture forceps of the invention, the operation of endoscopic suture by a doctor is very simple, and the doctor only needs to clamp and pull open the suture to complete the operation of penetrating the suture through the tissue when the suture is performed.
2. The needle forceps flap can serve as a cushion, and under the condition that the tissue is softer but the surface is hard, the needle forceps flap can avoid tissue abdication, so that the problem that the tissue is difficult to puncture is solved.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of a handle mechanism portion.
Fig. 3 is a schematic structural view of a connecting portion of the jaw driving portion and the transmission rod.
Fig. 4 and 5 are schematic side structural views of the needle trail forceps flap, wherein fig. 4 is a closed state of the needle trail forceps flap and fig. 5 is an open state of the needle trail forceps flap.
Fig. 6 is a schematic view of the structure of the needle tail forceps flap facing away from the back.
Fig. 7 is a schematic view of the structure of the needle forceps flap facing away from the back.
Fig. 8 is a schematic view of a sliding guide structure of the spring slider.
Fig. 9 is a schematic cross-sectional view of the connecting tube.
Fig. 10 is a schematic structural view of the traction rope connection block.
Detailed Description
The present invention will be described in further detail below.
As shown in fig. 1 and 2, a tissue suture forceps for endoscopic surgery comprises a handle mechanism, a connecting tube 31, a transmission rod 32, a traction rope 33 and a forceps head 9. The handle mechanism is mounted at the rear end of the connecting tube 31 and includes a handle bracket 11, a fixed handle 12, a first movable handle 13 and a second movable handle 21. The clamp head 9 is mounted at the front end of the connecting tube 31 and comprises two clamp petals. The connecting tube 31 is hollow and provided with an axial lumen. The transmission rod 32 and the traction rope 33 penetrate through the lumen in the connecting tube 31, the front end is connected with the clamp head 9, and the rear end is connected with the handle mechanism. Specifically, the front end of the transmission rod 32 is connected with an opening and closing driving mechanism of the two clamp petals of the clamp head 9, and the rear end of the transmission rod is connected with the first movable handle 13, so that the opening and closing of the first movable handle 13 can control the opening and closing of the two clamp petals of the clamp head 9. The front end of the traction rope 33 is connected with the suture needle clamping mechanisms of the two clamp petals of the clamp head 9, and the rear end is connected with the second movable handle 21. Whereby the opening and closing of the second movable handle 21 enables to control the gripping and release of the suture needle of the two jaws of the binding clip 9. In this embodiment, the connecting tube 31, as shown in fig. 9, includes two lumens: a drive rod lumen 311 and a pull rope lumen 312. The cross section of the transmission rod tube cavity 311 is rectangular, and the cross section of the hauling rope tube cavity 312 is circular. The transfer rod 32 passes through the transfer rod lumen 311. The pull-cord 33 passes through the pull-cord lumen 312. In this embodiment, the traction rope 33 is a metal rope formed by winding a plurality of flexible wires, and has sufficient physical strength.
The upper part of the handle bracket 11 is fixed with the connecting pipe 31. In this embodiment, the connecting tube 31 is mounted on the handle bracket 11 by a snap-fit mechanism. The fixed handle 12 is provided below the handle bracket 11. The first movable handle 13 is mounted behind the handle bracket 11 via a first pivot 15 and is located behind the fixed handle 12. The first movable handle 13 is provided with a connecting part 14. The connection portion 14 is located behind the connecting tube 31. The connecting part 14 is movably connected with the transmission rod 32, so that the transmission rod 32 is driven to move forwards and backwards when the first movable handle 13 rotates around the first rotating shaft 15. A spring return mechanism is mounted between the fixed handle 12 and the first movable handle 13. The spring return mechanism consists of two spring plates 16 respectively mounted on the fixed handle 12 and the first movable handle 13. One ends of the two spring pieces 16 are respectively fixed on the inner sides of the fixed handle 12 and the first movable handle 13, and the other ends are movably connected. Therefore, the two spring pieces 16 stretch the fixed handle 12 and the first movable handle 13 under the action of self-elastic force, and at the moment, the connecting part 14 pushes the transmission rod 32 to move forwards to drive the clamp head 9 to stretch. When the fixed handle 12 is matched with the first movable handle 13, the connecting part 14 pulls the transmission rod 32 backwards to drive the clamp head 9 to be closed. When the clamp head 9 is opened, two clamp petals of the clamp head 9 are opened in a scissor angle; when the clamp head 9 is closed, the two clamp petals of the clamp head 9 are mutually attached.
The second movable handle 21 is mounted on the handle bracket 11 through a second rotation shaft 22 and is located in front of the fixed handle 12. The second movable handle 21 is bound to the pulling rope 33 such that the pulling rope 33 can be pulled when the second movable handle 21 rotates around the second rotation shaft 22. Specifically, in the present embodiment, the handle bracket 11 is composed of a bracket main body and a bracket side cover. As shown in fig. 2, the bracket body is provided with a handle cavity 24 and a traction cavity 25. The bracket side covers are mounted to the sides of the bracket body for sealing the handle cavity 24 and the traction cavity 25. The second shaft 22 is located at the top end of the handle cavity 24. The top end of the second movable handle 21 is fixed with the second rotating shaft 22, and the bottom end extends out of the handle cavity 24, so that the second movable handle 21 can rotate or swing around the axis of the second rotating shaft 22. A return spring 23 is arranged in the handle cavity 24. One end of the return spring 23 is connected with the handle bracket 11, and the other end is connected with the second movable handle 21. The return spring 23 pulls the second movable handle 21 to swing forward. The handle cavity 24 communicates with the traction cavity 25. The side surface of the rear end of the connecting tube 31 is provided with a traction rope opening. The tether opening communicates with the tether lumen 312 as previously described. When the connecting tube 31 is mounted on the handle bracket 11 through the fastening mechanism, the pulling rope opening faces the pulling cavity 25, so that after the pulling rope 33 passes through the pulling rope pipe cavity 312, the pulling rope enters the pulling cavity 25 from the pulling rope opening, and then enters the handle cavity 24 through the pulling cavity 25 to be connected with the second movable handle 21. The traction rope 33 is connected with the second movable handle 21 in a binding mode. In this embodiment, the second movable handle 21 has a strip structure, and a plurality of rope grooves 211 are provided in the middle. When the hauling cable 33 is bound on the second movable handle 21, the hauling cable 33 is clamped in the cable groove 211. Thereby, the tension of the traction rope 33 is adjusted by binding the traction rope 33 on the different rope grooves 211. As can be seen from the above, the restoring spring 23, the portion where the second movable handle 21 and the pulling rope 33 are bound, and the portion where the second movable handle 21 and the second rotating shaft 22 are fixed are located in the handle cavity 24.
In addition, given that thoracoscopic procedures typically require the inflation of carbon dioxide within the chest cavity, a seal is required. For this purpose, a seal groove 26 is provided in the traction chamber 25 of the present embodiment. A sealing plug is provided in the sealing groove 26. The pull cord 33 passes through the sealing plug in the sealing groove 26.
The two forceps petals of the forceps head 9 are respectively a needle forceps petal and a needle tail forceps petal. The needle head forceps valve and the needle tail forceps valve are both provided with a suture needle clamping mechanism. The suture needle clamping mechanism of the needle tail forceps valve is used for clamping the needle tail part of the suture needle. The suture needle clamping mechanism of the needle head forceps valve is used for clamping the suture needle head part. The operation of the needle clamping mechanism of the needle forceps flap and the needle tail forceps flap to clamp the needle of the suture needle and the needle tail is realized by the operation of the aforementioned second movable handle 21. The second movable handle 21 is connected with the suture needle clamping mechanism of the needle forceps flap and the needle tail forceps flap through the traction rope 33. When the second movable handle 21 pulls the traction rope 33, the suture needle clamping mechanism of the needle head forceps valve clamps the suture needle head, and the suture needle clamping mechanism of the needle tail forceps valve releases the clamp of the suture needle tail; when the second movable handle 21 releases the pulling rope 33, the suture needle clamping mechanism of the needle head forceps flap releases the clamping of the suture needle head, and the suture needle clamping mechanism of the needle tail forceps flap clamps the suture needle tail. Whereby the needle can be switched back and forth between the two jaws in connection with the opening and closing operation of the head 9 by the first movable handle 13.
The jawset, as shown in fig. 3, 4, 5, 6, and 7, includes a drive portion 94 and a jawset portion 95. The driving portion 94 is provided with a shaft hole 421, and is mounted at the front end of the connecting tube 31 through the shaft hole 421 so that the jaw can rotate around the axis of the shaft hole 421. The driving part 94 is connected to the transmission rod 32 through a transmission mechanism. The transmission mechanism causes the two clamp petals to rotate around the axle center of the axle hole 421 when the transmission rod 32 moves back and forth, so that the clamp head 95 is opened or closed. The opening and closing of the jaw head 95, i.e. the opening and closing of the jaw 9. The jaw 95 includes a jaw case with jaw face plates 511. When the jaw head 95 is closed, the jaw panels 511 of the two jaws are brought into abutment with each other. The pincer panel 511 is provided with a pinhole 52. The pinholes 52 on the jaw plates 511 of the two jaws are oppositely arranged. The clamp head box is provided with a clamp head cavity. The forceps head cavity is communicated with the needle hole 52 and is provided with a suture needle clamping mechanism. The needle holding mechanism is used to hold a needle 99 that is threaded through the binding clip lumen via the needle aperture 52. The needle 99 and the jaw plate 511 are maintained perpendicular to each other while the needle 99 is held by the needle holding mechanism.
The driving portion 94 is realized by the driving plate 41. The drive plate 41 is a plate-like body and is perpendicular to the jaw plate 511. The driving plate 41 is divided into four regions, respectively: a detent region 42, a first channel region 43, a second channel region 44 and a chute region 45. Wherein the clamping area 42 has a relatively thick thickness and protrudes inwards. The first channel region 43 and the second channel region 44 are located on both sides of the detent region 42, respectively. The chute section 45 is located on the rear side of the detent section 42. The shaft hole 421 is located in the detent region 42. The chute section 45 is provided with an oblique slot 451. In this embodiment, the front end of the connecting tube 31 is provided with a U-shaped groove 313 along the central axis. On both sides of the U-shaped recess 313 are two opposing mounting tabs 314. The driving plate 41 is mounted in the U-shaped groove 313 between the two mounting wing plates 314 through the shaft hole 421 and the clamp head shaft 483 on the clamping area 42, so that the two clamp petals can rotate around the shaft center of the shaft hole 421 respectively. The driving plates 41 of the two clamp petals are oppositely arranged in the U-shaped groove 313, so that the clamping areas 42 of the two driving plates 41 are mutually attached. Since the click zone 42 protrudes inwardly, a transmission cavity 481 is formed between the angled groove zones 45 of the two jaws and the first channel zone 43 of one jaw and the second channel zone 44 of the other jaw form a hauling rope channel 482, as shown in fig. 3. The front end of the transmission rod 32 is located in the transmission cavity 481. The traction rope 33 passes through the transmission cavity 481 and the traction rope channel 482 and then enters the clamp head cavity of the clamp head box, and is connected with the suture needle clamping mechanism in the clamp head cavity. Obviously, there are two hauling cable channels 482 corresponding to the two hauling cables of the two clamp needle clamping mechanisms respectively.
In this embodiment, the transmission mechanism is composed of an inclined groove 451 and a sliding rod 34 provided at the front end of the transmission rod 32. The front end of the transmission rod 32 is flat, and two sliding rods 34 are respectively arranged on two sides. The two sliding rods 34 on both sides of the front end of the transmission rod 32 are respectively clamped in the two oblique grooves 451. The slide rod 34 is slidable along the diagonal groove 451 in the diagonal groove 451. The forward and backward movement of the transmission rod 32 drives the jaw to rotate around the axis of the shaft hole 421 by the interaction of the sliding rod 34 and the inclined groove 451, as shown in fig. 4 and 5. The rotation directions of the two clamp petals are opposite.
Further, it is contemplated that the clamping zones 42 of the two jaws cannot be fully opposed when the two jaws are open, and at this time, the pulling rope 33 is easily clamped between the second channel zone 44 of one jaw and the clamping zone 42 of the other jaw as it passes through the pulling rope channel. For this purpose, in the present embodiment, two guide wheels are provided in the first channel region 43, respectively: a first guide wheel 431 and a second guide wheel 432. A first wheel groove 441 and a second wheel groove 442 are provided in the second passage area 44. First wheel groove 441 and second wheel groove 442 correspond to first guide wheel 431 and second guide wheel 432, respectively. When the two jaws are rotated about the axis of the rotation shaft 421 to be opened or closed, the first guide wheel 431 and the second guide wheel 432 of one jaw can slide along the first wheel groove 441 and the second wheel groove 442 of the other jaw, respectively. Traction rope grooves are formed in the wheel faces of the two guide wheels. The traction rope 33 passes between the first guide wheel 431 and the second guide wheel 432. When the hauling rope 33 passes through the space between the first guide wheel 431 and the second guide wheel 432, the hauling rope 33 can be clamped in the hauling rope groove of the guide wheel. Thus, when the caliper flap rotates, the traction rope 33 is guided by the first guide wheel 431 and the second guide wheel 432, and the traction rope 33 can be prevented from being caught by the transmission mechanism and the dislocation state between the second passage area 44 and the catching area 42.
The binding clip box is comprised of a jaw face plate 511, a front end plate 512, a cover plate 514 and two side plates 513. The jaw face plate 511, front end plate 512, cover plate 514 and two side plates 513 form a jaw cavity with an open rear end. The front end plate 512 is located at the front end of the head box. The opening at the rear end of the binding clip cavity communicates with a hauling cable passage 482 on the drive portion 94. The clamp head cavity is internally provided with a needle abutting block 53, a spring sliding block 54 and a needle pressing block 58. The needle abutment 53 is mounted on the jaw plate 511 and is located between the spring slider 54 and the front end plate 512. The needle pressing block 53 is provided with a needle pressing slide 531. The needle hole 52 is communicated with the bottom of the needle pressing slide 531.
The spring slider 54 is mounted in the jaw cavity by a sliding guide mechanism and is located behind the abutment block 53. The slide guide mechanism, as shown in fig. 8, includes two card plates 55 and a guide slide 551. The clip 55 is inverted in an L-shaped configuration on the jaw face plate 511. The two clamping plates 55 are oppositely arranged. The spring slider 54 is provided with stepped grooves 544 on both sides thereof. The guide slide bar 551 is installed at the center of the jaw panel 511 in a front-rear direction arrangement. The two clamping plates 55 are respectively clamped on the two step grooves 544. The middle bottom of the spring slider 54 is provided with a guide slide hole 545. The guide slide bar 551 is caught in the guide slide hole 545 so that the spring slider 54 can slide forward and backward along the guide slide bar 551.
The rear end of the spring slider 54 is bound to the traction rope 33 and is connected with a spring mechanism. The direction of the force imparted by the spring mechanism to the spring slider 54 is opposite to the direction in which the traction rope 33 pulls the spring slider 54. In this embodiment, the pulling rope 33 pulls the spring slider 54 backward, and the acting force applied to the spring slider 54 by the spring mechanism is forward. In this embodiment, the spring mechanism is two pulling springs 562 disposed on two sides of the needle supporting block 53. Two spring grooves 561 are respectively arranged on two sides of the needle abutting block 53 in the front-back direction. A pull spring 562 is located within the pull spring 562. One end of the pulling spring 562 is connected to the front end plate 512 and the other end is connected to the spring slider 54. The contraction force of the pulling spring 562 pulls the spring slider 54 forward.
The spring slider 54 is connected to the presser pin 58. The needle pressing block 58 is located in the needle pressing slide 531 and can be pressed against the bottom of the needle pressing slide 531. When the needle pressing block 58 is pressed against the bottom of the needle pressing slide 531, the suture needle placed in the needle hole 52 can be pressed, thereby grasping the suture needle. Providing sufficient grip for the presser foot 58, the front end of the presser foot 58 is provided with a presser cushion 581. In the needle tail forceps flap, the needle pressing block 58 is pressed against the bottom of the needle pressing slide 531 by the urging force of the spring mechanism, whereby the needle pressing block 58 can grasp the suture needle by the spring mechanism when the pulling cord 33 is released. In the needle forceps flap, the needle pressing block 58 is pressed against the bottom of the needle pressing slide 531 by the traction force of the traction rope 33, whereby the needle pressing block 58 can grasp the suture needle under the action of the spring mechanism when the traction rope 33 is pulled.
To achieve the above object, in the needle tail clip of the present embodiment, the needle pressing slide 531 opens to the spring slider 54. The needle pressing block 58 is mounted at the front end of the spring slider 54. The needle pressing block 58 can move back and forth along the needle pressing slide 531 under the drive of the spring slider 54. Thus, when the pulling rope 33 is released, the spring mechanism pulls the spring slider 54 forward, driving the needle pressing block 58 forward to press against the bottom of the needle pressing slide 531, thereby grasping the suture needle; when the pull cord 33 pulls the spring slider 54, the plunger 58 is moved back away from the bottom of the plunger slide 531, thereby releasing the needle grip.
In the needle forceps flap of this embodiment, the needle pressing slide 531 opens toward the front end plate 512, and the needle pressing block 58 is mounted on the linkage plate 582. The linkage plate 582 is located between the front end plate 512 and the needle block 53 and directly in front of the needle block 53. The spring slider 54 is connected to the linkage plate 582 by two linkage rods 583 on either side of the needle block 53. When the pulling rope 33 is loosened, the spring mechanism pulls the spring slider 54 forward, and the needle pressing block 58 is driven to move forward away from the bottom of the needle pressing slide 531, so that the suture needle is loosened; when the pulling rope 33 pulls the spring slider 54, the needle pressing block 58 is driven to move backward and press against the bottom of the needle pressing slide 531, thereby grasping the suture needle.
In addition, in order to prevent the needle tail of the suture needle from being inserted too deeply into the needle hole 52, the needle abutting block 53 of the needle tail forceps flap is provided with the needle abutting plate 532, so that the suture needle can be abutted against the needle abutting plate 532 when the suture needle penetrates into the bottom of the needle pressing slide 531 through the needle hole 52.
In addition, the two clamp needle clamping mechanisms are respectively driven by two traction ropes, and the second movable handle 21 is connected with a single traction rope, so that the situation can be realized by weaving the traction ropes. The hauling rope of this embodiment is formed by winding and braiding metal filaments, so that the hauling rope connected with the two clamp-flap suture needle clamping mechanisms can be connected together in a braiding mode to form a single hauling rope which enters the hauling rope lumen 312 and then is connected with the second movable handle 21. The embodiment is realized by adopting a traction rope connecting block. As shown in fig. 10, the bottom of the front end U-shaped groove 313 of the connecting tube 31 is provided with a connecting cavity 315 in the axial direction. The front end of the connection cavity 315 opens into the U-shaped recess 313. The front end of the connecting cavity 315 is communicated with the hauling rope lumen 312. The pull rope connection block 334 is disposed in the connection cavity 315 and can slide back and forth along the connection cavity 315. The front end of the hauling rope connecting block 334 is connected with the needle tail forceps flap hauling rope 331 and the needle forceps flap hauling rope 332. The connection between the tail clip pulling rope 331 and the pulling rope connecting block 334 is separated from the connection between the needle clip pulling rope 332 and the pulling rope connecting block 334 by a certain distance. The tail forceps flap traction rope 331 and the needle forceps flap traction rope 332 are respectively connected with the suture needle clamping mechanisms of the two forceps flaps. The rear end of the hauling rope connecting block 334 is connected with the handle flap hauling rope 333. The handle flap pulling rope 333 passes through the pulling rope lumen 312 and then is connected with the second movable handle 21.
Claims (7)
1. A tissue suture forceps for endoscopic surgery, which is characterized by comprising a handle mechanism, a connecting tube (31), a transmission rod (32), a traction rope (33) and a forceps head (9); the handle mechanism is arranged at the rear end of the connecting pipe (31); the clamp head (9) is arranged at the front end of the connecting pipe (31); the connecting pipe (31) is hollow and provided with an axial pipe cavity; the transmission rod (32) and the traction rope (33) penetrate through a pipe cavity in the connecting pipe (31), and the front end and the rear end are respectively connected with the clamp head (9) and the handle mechanism; the handle mechanism comprises a handle bracket (11), a fixed handle (12), a first movable handle (13) and a second movable handle (21); the upper part of the handle bracket (11) is fixed with the connecting pipe (31); the fixed handle (12) is arranged below the handle bracket (11); the first movable handle (13) is arranged at the rear of the handle bracket (11) through a first rotating shaft (15) and is positioned at the rear of the fixed handle (12); the first movable handle (13) is provided with a connecting part (14) and is movably connected with the transmission rod (32) through the connecting part (14), so that the transmission rod (32) is driven to move forwards and backwards when the first movable handle (13) rotates around the first rotating shaft (15); the second movable handle (21) is arranged on the handle bracket (11) through a second rotating shaft (22) and is positioned in front of the fixed handle (12); the second movable handle (21) is bound with the traction rope (33) so that the traction rope (33) can be pulled when the second movable handle (21) rotates around the second rotating shaft (22); the clamp head (9) comprises two clamp petals; the two forceps petals are respectively a needle head forceps petal and a needle tail forceps petal; the forceps flap comprises a driving part (94) and a forceps head part (95); the driving part (94) is provided with a shaft hole (421) and is arranged at the front end of the connecting pipe (31) through the shaft hole (421) so that the clamp valve can rotate around the shaft center of the shaft hole (421); the driving part (94) is connected with the transmission rod (32) through a transmission mechanism; the transmission mechanism drives the two clamp petals to rotate around the axle center of the axle hole (421) when the transmission rod (32) moves forwards and backwards, so that the clamp head (95) is opened or closed; the jaw (95) comprises a jaw case with jaw plates (511); when the clamp head (95) is closed, the clamp panels (511) of the two clamp petals are mutually attached; a pinhole (52) is arranged on the pincer panel (511); pinholes (52) on the jaw panels (511) of the two jaw are oppositely arranged; a needle propping block (53), a spring sliding block (54) and a needle pressing block (58) are arranged in the clamp head box; a needle pressing slide way (531) is arranged on the needle abutting block (53); the needle hole (52) is communicated with the bottom of the needle pressing slide way (531); the spring sliding block (54) is connected with a spring mechanism and is bound with the traction rope (33); the direction of the acting force given to the spring sliding block (54) by the spring mechanism is opposite to the direction of the pulling rope (33) pulling the spring sliding block (54); the spring sliding block (54) is connected with the needle pressing block (58); the needle pressing block (58) is positioned in the needle pressing slide rail (531) and can press the bottom of the needle pressing slide rail (531); when the needle pressing block (58) presses the bottom of the needle pressing slide rail (531), the suture needle placed in the needle hole (52) can be pressed, so that the suture needle is gripped; in the needle tail forceps valve, a needle pressing block (58) is pressed to the bottom of a needle pressing slideway (531) by the acting force of the spring mechanism; in the needle forceps valve, a needle pressing block (58) is pressed to the bottom of a needle pressing slideway (531) through the traction force of a traction rope (33); the transmission mechanism comprises an inclined groove (451) arranged on the driving part (94) and a sliding rod (34) arranged at the front end of the transmission rod (32); the sliding rod (34) at the front end of the transmission rod (32) is clamped in two inclined grooves (451) of the two clamp flap driving parts (94); the slide rod (34) can slide along the inclined groove (451) in the inclined groove (451); the transmission rod (32) moves forwards and backwards, and the clamp valve is driven to rotate around the axle center of the axle hole (421) through the interaction of the sliding rod (34) and the inclined groove (451); the driving part (94) comprises a driving plate (41); the driving plate (41) is perpendicular to the jaw panel (511); the drive plate (41) is divided into four areas, respectively: a clamping zone (42), a first channel zone (43), a second channel zone (44) and a chute zone (45); wherein, the thickness of the clamping area (42) is thicker and protrudes inwards; the first channel region (43) and the second channel region (44) are respectively positioned at two sides of the clamping region (42); the chute area (45) is positioned at the rear side of the clamping area (42); the shaft hole (421) is positioned in the clamping area (42); the inclined groove (451) is positioned in the inclined groove area (45); the clamping areas (42) of the two clamp valve driving parts (94) are oppositely arranged, so that a transmission cavity is formed between the chute areas (45) of the two clamp valve, and a traction rope channel is formed by the first channel area (43) of one clamp valve and the second channel area (44) of the other clamp valve; the front end of the transmission rod (32) is positioned in the transmission cavity; the hauling cable (33) passes through the hauling cable channel and the transmission cavity; the binding clip box comprises a front end plate (512), a cover plate (514) and two side plates (513); the forceps panel (511), the front end plate (512), the cover plate (514) and the two side plates (513) form a forceps head cavity with an opening at the rear end; the needle abutting block (53), the spring sliding block (54) and the needle pressing block (58) are positioned in the clamp head cavity; the needle abutting block (53) is arranged on the clamp panel (511) and is positioned between the spring sliding block (54) and the front end plate (512); in the needle tail forceps valve, a needle pressing slide rail (531) is opened to a spring slide block (54), and a needle pressing block (58) is arranged at the front end of the spring slide block (54); in the needle forceps valve, a needle pressing slide rail (531) is opened towards a front end plate (512), and a needle pressing block (58) is arranged on a linkage plate (582); the linkage plate (582) is positioned between the front end plate (512) and the needle abutting block (53); the spring sliding block (54) is connected with the linkage plate (582) through two linkage rods (583) on two sides of the needle supporting block (53).
2. Tissue suturing clamp for endoscopic surgery according to claim 1, characterized in that the first channel region (43) is provided with two guide wheels; a traction rope groove is formed in the wheel surface of the guide wheel; the two guide wheels are respectively: a first guide wheel (431) and a second guide wheel (432); the hauling cable (33) passes between the first guide wheel (431) and the second guide wheel (432).
3. Tissue suturing forceps for endoscopic surgery according to claim 2, characterized in that the second channel region (44) is provided with a first wheel groove (441) and a second wheel groove (442) matching the first (431) and the second (432) guide wheels, such that the first (431) and the second (432) guide wheels of one forceps flap can slide along the first (441) and the second (442) wheel groove of the other forceps flap, respectively.
4. Tissue suture forceps for endoscopic surgery according to claim 1, characterized in that the spring means are two pulling springs (562) arranged in spring grooves (561) on both sides of the needle abutment block (53); one end of the traction spring (562) is connected with the front end plate (512), and the other end is connected with the spring sliding block (54).
5. Tissue suture forceps for endoscopic surgery according to claim 1, characterized in that the needle abutment block (53) is provided with a needle abutment plate (532), against which needle abutment plate (532) the suture needle can be pushed when penetrating the bottom of the needle pressing slide (531) through the needle hole (52); the front end of the needle pressing block (58) is provided with a needle pressing soft cushion (581).
6. Tissue suturing forceps for endoscopic surgery according to claim 1, characterized in that a handle lumen (24) and a traction lumen (25) are provided in the handle carrier (11); the second movable handle (21) is connected with a return spring (23); the part of the return spring (23), the second movable handle (21) and the traction rope (33) are bound, and the part of the second movable handle (21) and the second rotating shaft (22) are fixed in the handle cavity (24); the hauling cable (33) penetrates into the handle cavity (24) after penetrating through the hauling cavity (25) through the lateral opening of the connecting pipe (31).
7. Tissue suturing forceps for endoscopic surgery according to claim 6, characterized in that a sealing groove (26) is provided in the traction chamber (25); a sealing plug is arranged in the sealing groove (26); the hauling cable (33) passes through the sealing plug in the sealing groove (26).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810232917 | 2018-03-21 | ||
| CN2018102329172 | 2018-03-21 |
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| Publication Number | Publication Date |
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| CN108420479A CN108420479A (en) | 2018-08-21 |
| CN108420479B true CN108420479B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810313894.8A Active CN108420479B (en) | 2018-03-21 | 2018-04-10 | Tissue suture forceps for endoscopic surgery |
| CN201820498210.1U Expired - Fee Related CN209122322U (en) | 2018-03-21 | 2018-04-10 | A kind of tissue stitching clamp for endoscope-assistant surgery |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820498210.1U Expired - Fee Related CN209122322U (en) | 2018-03-21 | 2018-04-10 | A kind of tissue stitching clamp for endoscope-assistant surgery |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109620323A (en) * | 2019-01-09 | 2019-04-16 | 郑州大学第附属医院 | Drawing-type hysteroscope sewing needle holder |
| CN109620325A (en) * | 2019-01-09 | 2019-04-16 | 郑州大学第附属医院 | Auto-manual system celioscope stitching needle holder |
| CN110742659A (en) * | 2019-11-05 | 2020-02-04 | 北京航天总医院 | Incision-free tissue grasping device for endoscope |
| CN115737029B (en) * | 2023-01-10 | 2023-05-16 | 青岛智兴医疗器械有限公司 | Continuous stitching instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384725A (en) * | 1999-06-18 | 2002-12-11 | 诺瓦雷外科系统公司 | Surgical clmap having replaceable pad |
| CN104546109A (en) * | 2013-10-19 | 2015-04-29 | 郑州泽正技术服务有限公司 | Kirschner wire bender for department of orthopedics |
| CN106073859A (en) * | 2016-08-29 | 2016-11-09 | 江苏艾拓生物技术有限公司 | A kind of Microtrauma surgical operation implement |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6896686B2 (en) * | 2001-03-23 | 2005-05-24 | Arthrex, Inc. | Arthroscopic suture passing instrument |
| US8465505B2 (en) * | 2011-05-06 | 2013-06-18 | Ceterix Orthopaedics, Inc. | Suture passer devices and methods |
-
2018
- 2018-04-10 CN CN201810313894.8A patent/CN108420479B/en active Active
- 2018-04-10 CN CN201820498210.1U patent/CN209122322U/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384725A (en) * | 1999-06-18 | 2002-12-11 | 诺瓦雷外科系统公司 | Surgical clmap having replaceable pad |
| CN104546109A (en) * | 2013-10-19 | 2015-04-29 | 郑州泽正技术服务有限公司 | Kirschner wire bender for department of orthopedics |
| CN106073859A (en) * | 2016-08-29 | 2016-11-09 | 江苏艾拓生物技术有限公司 | A kind of Microtrauma surgical operation implement |
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| Publication number | Publication date |
|---|---|
| CN209122322U (en) | 2019-07-19 |
| CN108420479A (en) | 2018-08-21 |
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