Split chain type blocking forceps

Abstract

The present application relates to the technical field of medical apparatus and instruments, and relates to a split chain type blocking forceps. The present application comprises a handle assembly, a chain type driving assembly and a forceps head assembly. The handle assembly comprises a fixed handle and a movable handle which are hingedly connected. The movable handle is connected with an inner tube. A hollow tube is drivingly connected to the upper end of the movable handle. The chain type driving assembly comprises a wire and a bead chain. The bead chain is arranged on the outer side of the wire in a spaced manner. One end of the wire is fixedly connected with the inner tube. A bead chain top head is arranged at the right end of the bead chain. An axle cap is arranged at the left end of the bead chain. The bead chain top head is in contact with the hollow tube. The forceps head assembly comprises a first clamp head, a second clamp head, a split rotating rod and a spring. The first clamp head and the second clamp head are hingedly connected. The second clamp head is rotatably connected with the split rotating rod. The split rotating rod is connected with a steel wire. The axle cap is arranged on the steel wire and is fixedly arranged in the first clamp head. The spring is arranged on the steel wire. The spring in the forceps head assembly cooperates with the chain type driving assembly and the handle assembly. The two clamp heads can be automatically opened by the spring when the handle assembly is loosened, so that the blood vessels can be conveniently clamped.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and relates to a split chain type blocking forceps. BACKGROUND

[0002] In a heart surgery, a blocking forceps is needed to block an artery or vein. The handle of a traditional blocking forceps has a fixed shape. In order to block a specific blood vessel, the blocking forceps needs to be inserted into a specified position through an incision on the chest of a patient. In order to conveniently adjust the position and direction of the blocking forceps to clamp the artery at the specified position, a large incision or a thoracotomy is often needed, which makes it more difficult for the patient to recover after the surgery.

[0003] Patent No. CN106308872A discloses a chain type blocking forceps, which comprises a fixed handle, a movable handle, a lengthened handle, a fixed forceps head and a movable forceps head. The movable handle is connected with the fixed handle and can be opened and closed relative to the fixed handle. The lengthened handle is a hollow structure and can be bent. One end of the lengthened handle is connected with the fixed handle and the movable handle respectively. The fixed forceps head is connected with the other end of the lengthened handle. The movable forceps head is connected with the fixed forceps head and connected with the movable handle through a solid steel cable penetrating through the lengthened handle. The lengthened handle of the disclosed chain type blocking forceps can be freely bent and shaped by a surgeon according to the position of the incision and the blood vessel to be blocked, so that the size and number of incisions during the surgery can be minimized.

[0004] The blocking forceps opens the movable forceps head and the fixed forceps head by relying on the diastolic pressure of the blood vessel. The movable forceps head is connected with the movable handle through a steel wire. The movable forceps head is rotated to drive the steel wire and then rotate to cooperate with the fixed forceps head to clamp the blood vessel. This operation mode affects the operation efficiency.

[0005] In summary, in order to solve the problems in the prior art, a split chain type blocking forceps with simple structure and convenient operation needs to be designed. SUMMARY

[0006] The present application provides a split chain type blocking forceps to solve the problems in the prior art.

[0007] The purpose of the present application can be achieved by the following technical scheme: a split chain type blocking forceps comprises:

[0008] A handle assembly comprises a fixed handle, a movable handle, a hollow tube and a reset assembly. The middle part of the movable handle is hingedly connected with the fixed handle. An inner tube is connected to the upper end of the movable handle. A sliding groove is arranged on the inner tube. An activity shaft pin is sleeved on the upper end of the movable handle. The hollow tube is slidably sleeved on the outer side of the inner tube. The activity shaft pin is located in the sliding groove and fixedly connected with the hollow tube. The reset assembly is connected to the lower end of the fixed handle and the movable handle.

[0009] A chain drive assembly includes an iron wire and a bead chain. The bead chain is slidably sleeved on the outside of the iron wire at intervals. The right end of the iron wire is fixedly connected to the left end of the inner tube. The right end of the bead chain is provided with a bead chain top sleeved on the steel wire. The bead chain top is in contact with the left end of the hollow tube. The left end of the bead chain is provided with a shaft cap sleeved on the steel wire. The left end of the steel wire is provided with a connecting post.

[0010] The clamp assembly includes a first clamp, a second clamp, a split rotating rod, and a spring. The first clamp and the second clamp are hinged together. The lower end of the second clamp is rotatably connected to the left end of the split rotating rod. The right end of the split rotating rod is rotatably connected to the left end of a connecting post. The connecting post is slidably disposed in a slide rail one inside the first clamp. The left end of a shaft cap is fixed inside the slide rail one. The shaft cap has a slide rail two that communicates with the slide rail one. The spring is sleeved on a steel wire and is located between the slide rail one and the slide rail two.

[0011] In a further improvement, the reset assembly includes a rack and pinion latch, a movable latch, a latch bracket, and a latch switch. The right end of the rack and pinion latch is fixed to the middle of the fixed handle. The middle of the movable handle has a through groove for the rack and pinion latch to pass through. The movable latch is rotatably disposed in the through groove. The upper end of the movable latch is toothedly connected to the lower end of the rack and pinion latch. The latch bracket is fixed to the left end of the movable latch. The latch switch is fixed to the right end of the movable handle. The latch switch has a limiting groove that engages with the protrusion at the right end of the movable latch.

[0012] In a further improvement, the reset assembly also includes a first bent spring sheet and a second bent spring sheet. The first bent spring sheet is fixed to the inside of the movable handle, and the second bent spring sheet is fixed to the inside of the fixed handle. The top end of the first bent spring sheet is inserted into the inside of the second bent spring sheet.

[0013] In a further improvement, a locking nut is threaded to the front end of the hollow tube, and the locking nut is fitted onto the top of the bead chain.

[0014] As a further improvement, a stop block is attached to the tail end of the hollow tube.

[0015] As a further improvement, the fixed handle is provided with an extension in the middle.

[0016] Compared with the prior art, the advantages of the split chain-type blocking clamp of the present invention are as follows:

[0017] In this invention, a spring is added to the clamp assembly in conjunction with a chain drive assembly and a handle assembly. In the initial state, the handle assembly is relaxed, allowing the two clamps to open automatically via the spring. This makes it easier for the user to clamp blood vessels, changing the previous method of using the blood vessel's own diastolic pressure to open the clamps and improving operational efficiency.

[0018] The steel wire in the chain drive assembly matches several groups of bead chains in series, and the handle assembly matches the jaw assembly. The bead chains on the steel wire are tensioned and loosened, the compression degree between the bead chains is changed, the chain drive assembly is changed freely between flexibility and rigidity, the flexible chain drive assembly makes the jaw assembly more flexible, the bending direction and bending radian of the jaw assembly are adjusted in a narrow surgical incision and a cavity, the jaw assembly smoothly and quickly reaches a blood vessel clamping position, and meanwhile, the flexible chain drive assembly can reduce the blocking effect on other instruments; when the blood vessel clamping position is determined, the flexible chain drive assembly becomes rigid, and the clamping and control on the blood vessel are improved.

[0019] The single steel wire in the chain drive assembly matches the bead chain, so that the diameter of the circle formed by the bending of the bead chain is smaller, the rotating angle of the chain drive assembly is larger, the rotating radian is smaller, the adjustment is more flexible, and the position can be adjusted in a narrower space so as to smoothly reach the blood vessel position. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure schematic view of the application

[0021] Figure 2 The structure schematic view of the internal structure of the application

[0022] Figure 3 The structure schematic view of the internal structure of the application Figure 2 The structure schematic view of the internal structure of the application Figure 1 The structure schematic view of the internal structure of the application

[0023] Figure 4 The structure schematic view of the internal structure of the application Figure 2 The structure schematic view of the internal structure of the application Figure 2 The structure schematic view of the internal structure of the application

[0024] Figure 5 The structure schematic view of the internal structure of the application

[0025] Figure 6 The structure schematic view of the internal structure of the application Figure 5 The structure schematic view of the internal structure of the application

[0026] In the drawing, 1 is a handle assembly, 11 is a fixed handle, 12 is a movable handle, 121 is a through groove, 13 is a hollow pipe, 14 is a reset assembly, 141 is a rack lock, 142 is a movable lock, 1421 is a convex part, 143 is a lock support, 144 is a lock switch, 1441 is a limiting groove, 145 is a bending spring piece one, 146 is a bending spring piece two, 15 is an inner pipe, 151 is a sliding groove, 16 is a movable shaft pin, 2 is a chain drive assembly, 21 is a steel wire, 22 is a bead chain, 23 is a bead chain top, 24 is a shaft cap, 241 is a sliding channel two, 25 is a connecting column, 3 is a jaw assembly, 31 is a clamp one, 311 is a sliding channel one, 32 is a clamp two, 33 is a split rotating rod, 34 is a spring, 4 is a locking nut, 5 is an arc-shaped groove, 6 is a stop block, and 7 is an extension part. Detailed Implementation

[0027] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly, for example, referring to both fixed connections and detachable connections. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0029] The following is a description of the embodiments and appendices. Figures 1-6 The technical solution of the present invention will be further described below.

[0030] Example 1

[0031] A split-type chain-type blocking clamp, comprising:

[0032] Handle assembly 1 includes a fixed handle 11, a movable handle 12, a hollow tube 13, and a reset assembly 14. The middle part of the movable handle 12 is hinged to the fixed handle 11. The upper end of the movable handle 12 is connected to an inner tube 15. The inner tube 15 is provided with a sliding groove 151. A movable shaft pin 16 is sleeved on the upper end of the movable handle 12. The hollow tube 13 is slidably sleeved on the outside of the inner tube 15. The movable shaft pin 16 is located in the sliding groove 151 and is fixedly connected to the hollow tube 13. The reset assembly 14 is connected to the lower end of the fixed handle 11 and the movable handle 12.

[0033] The chain drive assembly 2 includes an iron wire 21 and a bead chain 22. The bead chain 22 is slidably sleeved on the outside of the iron wire 21 at intervals. The right end of the iron wire 21 is fixedly connected to the left end of the inner tube 15. The right end of the bead chain 22 is provided with a bead chain top 23 sleeved on the iron wire 21. The bead chain top 23 is in contact with the left end of the hollow tube 13. The left end of the bead chain 22 is provided with a shaft cap 24 sleeved on the iron wire 21. The left end of the iron wire 21 is provided with a connecting post 25. The front end of the hollow tube 13 is threaded with a locking nut 4, and the locking nut 4 is sleeved on the bead chain top 23.

[0034] The jaw assembly 3 comprises a first jaw 31, a second jaw 32, a split rotating rod 33 and a spring 34, the first jaw 31 is hingedly connected with the second jaw 32, the lower end of the second jaw 32 is rotationally connected with the left end of the split rotating rod 33, the right end of the split rotating rod 33 is rotationally connected with the left end of the connecting column 25, the connecting column 25 is slidably arranged in the slide 311 in the first jaw 31, the left end of the shaft cap 24 is fixed in the slide 311, the shaft cap 24 is provided with the slide 241 which is in communication with the slide 311, the spring 34 is sleeved on the steel wire 21 and located between the slide 311 and the slide 241.

[0035] As shown in the figure, the use principle of the present application is as follows: the fixed handle 11 remains stationary, the movable handle 12 is driven to move to the side close to the fixed handle 11, the movable handle 12 drives the movable shaft pin 16 to move leftward in the sliding groove 151, the movable shaft pin 16 drives the hollow tube 13 outside to move leftward, and then drives the locking nut 4 to push the bead chain top head 23 to move leftward. Figures 1-6 The original gap between the bead chains 22 on the steel wire 21 is reduced, until the bead chains 22 are pressed against each other to generate pressure, and then the fixed and shaped jaw assembly 3 is fixed and shaped, so that it changes from flexible to rigid, at the same time, the bead chains 22 push the shaft cap 24 at the front end to move forward, so that the first jaw 31 at the lower end moves along the left side of the connecting column 25, and the first jaw 31 drives the hingedly connected second jaw 32 to rotate downward in the process of moving leftward, so as to clamp the blood vessel in the first jaw 31 and the second jaw 32.

[0036] When the movable handle 12 is released, that is, the movable handle 12 is away from the end close to the fixed handle 11, the movable handle 12 drives the movable shaft pin 16 to move rightward in the sliding groove 151, the movable shaft pin 16 drives the hollow tube 13 outside to move rightward, so that the left end of the hollow tube 13 is spaced apart from the bead chain top head 23.

[0037] At the same time, the original closed first jaw 31 and second jaw 32 are released, the spring 34 inside releases the elastic force, the bead chains 22 are loosened, the steel wire 21 is pushed leftward (equivalent to the steel wire being lengthened), the first jaw 31 is driven to move leftward along the connecting column 25, and the movement of the first jaw 31 synchronously drives the hingedly connected second jaw 32 to rotate upward, so as to open the jaws, and the blood vessel gradually returns to the normal state.

[0038] In the present application, the spring is additionally arranged in the jaw assembly, cooperates with the chain type driving assembly and the handle assembly, so that the two jaws can be automatically opened by the spring in the initial state, the user is convenient to clamp the blood vessel, and the operation efficiency is improved by changing the previous method of opening the jaws by using the diastolic pressure of the blood vessel.

[0039] The steel wire in the chain drive assembly matches several groups of bead chains in series, and the handle assembly matches the jaw assembly. The bead chains on the steel wire are tensioned and loosened, the compression between the bead chains is changed, the chain drive assembly is freely changed between flexibility and rigidity, the flexible chain drive assembly makes the jaw assembly more flexible, the bending direction and bending amplitude of the jaw assembly are adjusted in a narrow surgical incision and a cavity, so that the jaw assembly smoothly and quickly reaches a blood vessel clamping position, and the flexible chain drive assembly can reduce the blocking effect on other instruments; when the blood vessel clamping position is determined, the flexible chain drive assembly becomes rigid, and the clamping and control of the blood vessel are improved.

[0040] Meanwhile, the single steel wire in the chain drive assembly matches the bead chain, so that the diameter of the circle formed by the bending of the bead chain is smaller, the rotation angle of the chain drive assembly is larger, the rotation radius is smaller, the adjustment is more flexible, and the position can be adjusted in a narrower space so that the chain drive assembly smoothly reaches the blood vessel position.

[0041] As a further preferred embodiment, the reset assembly 14 includes a rack lock 141, a movable lock 142, a lock bracket 143, and a lock switch 144. The right end of the rack lock 141 is fixed to the middle part of the fixed handle 11, the middle part of the movable handle 12 is provided with a through groove 121 for the rack lock 141 to pass through, the movable lock 142 is rotationally arranged in the through groove 121, the upper end teeth of the movable lock 142 are connected with the lower end teeth of the rack lock 141, the lock bracket 143 is fixed to the left end of the movable lock 142, and the lock switch 144 is fixed to the right end of the movable handle 12. The lock switch 144 is provided with a limiting groove 1441 for clamping the protruding part 1421 at the right end of the movable lock 142. The reset assembly 14 further includes a bending spring sheet one 145 and a bending spring sheet two 146. The bending spring sheet one 145 is fixed to the inner side of the movable handle 12, the bending spring sheet two 146 is fixed to the inner side of the fixed handle 11, and the top end of the bending spring sheet one 145 is inserted into the inside of the bending spring sheet two 146.

[0042] As shown in Figure 2 pressing the lower end of the lock bracket 143 drives the movable lock 142 to rotate counterclockwise, so that the protruding part 1421 at the right end of the movable lock 142 is out of the limiting groove 1441, and the teeth in the middle part of the movable lock 142 are disconnected with the teeth at the lower end of the rack lock 141, so as to adjust the included angle between the movable handle 12 and the fixed handle 11. When it is necessary to fix the movable handle 12, the lower end of the lock bracket 143 is loosened, the lock bracket 143 is elastically deformed and rebounds into the limiting groove 1441 of the lock switch 144 to fix the rack lock 141 and the movable lock 142 by tooth connection.

[0043] The bending spring sheet one 145 and the bending spring sheet two 146 increase the elastic force between the movable handle 12 and the fixed handle 11, and facilitate the reset of the movable handle 12.

[0044] As a further preferred embodiment, the hollow tube 13 is provided with a stopper 6 at the tail end, and the fixed handle 12 is provided with an extension 7 at the middle part. As shown in Figure 5 The extension 7 at the middle part of the right side of the fixed handle 12 is integrally connected, which facilitates the holding.

[0045] The preferred embodiments of the present application are described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations without creative work based on the concept of the present application. Therefore, any technical solutions obtained by logical analysis, reasoning or limited experiments based on the prior art within the concept of the present application should be within the protection scope defined by the claims.

Claims

1. A split chain breaker characterized by, The utility model provides a kind of fixed type adjustable pliers, including: Handle assembly, including fixed handle, movable handle, hollow tube and reset component, the movable handle middle part is hinged with fixed handle, the inner tube is connected in the upper end of movable handle, the inner tube is equipped with sliding slot, the movable handle upper end is equipped with movable axle pin, the hollow tube is slidably set in the outer side of inner tube, the movable axle pin is located in sliding slot and is fixedly connected with hollow tube, the reset component is connected in the lower end of fixed handle and movable handle; Chain drive assembly, including wire and bead chain, the bead chain is sequentially and spacedly slidably set in the outer side of wire, the wire right end is fixedly connected with inner tube left end, the bead chain right end is equipped with bead chain top head that is slidably set in the steel wire, the bead chain top head is in contact with the left end of hollow tube, the bead chain left end is equipped with axle cap that is slidably set in the steel wire, the steel wire left end is equipped with connecting column; Jaw assembly, including chuck one, chuck two, split rotating rod and spring, the chuck two is hingedly connected with chuck one, the chuck two lower end is rotatably connected with the left end of split rotating rod, the right end of split rotating rod is rotatably connected with the left end of connecting column, the connecting column is slidably arranged in the sliding groove one in the interior of chuck one, the left end of axle cap is fixed in sliding groove one, the axle cap is equipped with sliding groove two that is communicated with sliding groove one, the spring is slidably set in the steel wire, and the spring is located between sliding groove one and sliding groove two; The left end of hollow tube is equipped with locking nut, and the locking nut is slidably set in the bead chain top head; Movable handle drives movable axle pin to move left in sliding slot, movable axle pin drives hollow tube outside to move left, in turn drives locking nut to push bead chain top head to move left, when bead chain top head moves left and pushes bead chain, the gap between bead chain reduces, until the pressure is generated when bead chain is pressed tightly, in turn fixedly shaped jaw assembly, so that it changes from flexible to rigid, while bead chain pushes axle cap in front to move forward, so that chuck one in lower end moves along the left side of connecting column, while chuck one moves left, it drives chuck two hingedly connected to rotate downward.

2. The split chain-type blocking pliers according to claim 1, wherein The reset component includes rack lock, movable lock, lock bracket and lock switch, the right end of rack lock is fixed in the middle part of fixed handle, the middle part of movable handle is equipped with through slot for rack lock, the movable lock is rotatably arranged in the through slot, the upper end of movable lock is tooth-connected with the lower end of rack lock, the lock bracket is fixed in the left end of movable lock, the lock switch is fixed in the right end of movable handle, and the lock switch is equipped with limiting slot for clamping convex part in the right end of movable lock.

3. The split chain-type blocking pliers according to claim 2, wherein The reset component further includes bending spring sheet one and bending spring sheet two, the bending spring sheet one is fixed in the inner side of movable handle, the bending spring sheet two is fixed in the inner side of fixed handle, and the top end of bending spring sheet one is inserted into the interior of bending spring sheet two.

4. The split chain-type blocking pliers according to claim 1, wherein The tail end of hollow tube is clamped with stop block.

5. The split chain-type blocking pliers according to claim 1, wherein The middle part of fixed handle is equipped with extension.

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