Foreign body forceps with adjustable rotation angle and use method

Abstract

The invention relates to the technical field of medical instruments, in particular to a pair of foreign body forceps with an adjustable rotation angle and a use method. A pair of foreign body forceps with an adjustable rotation angle comprises an outer tube, an inner tube, a forceps head and a handle piece. The handle piece is connected with the tong head through the inhaul cable, the inhaul cable is sleeved with the inner pipe, the inner pipe and the inhaul cable are coaxial, and the handle piece can drive the inhaul cable to move and enable the tong head to retract into the inner pipe. The inner pipe is sleeved with a spring, the inner pipe is sleeved with the outer pipe, the outer pipe and the inner pipe are coaxial, and the outer pipe can rotate relative to the inner pipe and can axially move relative to the inner pipe. According to the foreign matter forceps with the adjustable rotation angle, the outer pipe rotates relative to the inner pipe, the bending angle of the forceps head is adjusted, and the stability and flexibility of operation are improved. According to different positions of the foreign matters in the body, the length of the spring extending out of the adjusting ring is adjusted by moving the outer tube relative to the inner tube, so that the adaptability to the foreign matters at different positions in the body is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a foreign body forceps with adjustable rotation angle and a use method. BACKGROUND

[0002] The foreign body forceps is an important tool in medical devices, mainly used for clamping, picking and other operations in surgery. The commonly used foreign body forceps mainly includes an outer tube, a forceps head, a fixed handle and a sliding handle. The forceps head is a flexible steel wire ring structure, which is convenient for clamping articles such as safety pins. The forceps head can be retracted in the outer tube. When the foreign body forceps is used to pick up foreign bodies in the human body, the endoscope is first extended to the foreign body, and then the foreign body forceps is extended from the front end of the endoscope, so that the forceps head is extended to the foreign body, the forceps head is extended from the outer tube, and the forceps head is close to the foreign body. Then the handle is pulled to ensure that the forceps head has locked the foreign body, and then the foreign body forceps and the endoscope are slowly withdrawn.

[0003] However, in use, the angle of the forceps head in the circumferential direction is realized by rotating the handle. Since the range of human hand twisting is limited, if the position of the foreign body is outside the range of human hand twisting, the angle of the forceps head is not convenient to adjust, and the operation stability of the holding part will also be affected, and the clamping and picking failure may occur. SUMMARY

[0004] The present application provides a foreign body forceps with adjustable rotation angle and a use method to solve the problem that the angle of the forceps head in the circumferential direction is realized by rotating the handle in use of the existing foreign body forceps, and the angle of the forceps head is not convenient to adjust if the position of the foreign body is outside the range of human hand twisting.

[0005] The foreign body forceps with adjustable rotation angle of the present application adopts the following technical scheme: a foreign body forceps with adjustable rotation angle, comprising an outer tube, an inner tube, a forceps head and a handle assembly; the handle assembly is connected with the forceps head through a cable; the inner tube is sleeved outside the cable and coaxial with the cable, the handle assembly can drive the cable to move and make the forceps head retract into the inner tube; a spring is sleeved on the inner tube, and the spring is located at one end of the inner tube away from the handle assembly in the axial direction of the inner tube; the outer tube is sleeved outside the inner tube and coaxial with the inner tube, the outer tube can rotate relative to the inner tube and can move axially relative to the inner tube; one end of the outer tube away from the handle assembly in the axial direction is connected with an adjusting ring through a spring piece, and the adjusting ring is sleeved with the spring; a traction wire is provided through the outer tube, and the traction wire can move relative to the outer tube to make the spring bend.

[0006] Further, the forceps head is a circular ring.

[0007] Further, the handle assembly comprises a grip, a handle and a pull rod; the grip and the handle are hinged and connected through a spring strip, a sleeve is fixedly arranged on the grip, and the inner tube is fixedly connected with the sleeve; the pull rod is coaxial with the sleeve and located in the sleeve, and the pull rod is connected with the cable and the handle at both ends.

[0008] Further, the outer tube is screwed with an adjusting sleeve away from one end of the forceps head along the axial direction of the outer tube, the adjusting sleeve is in sliding fit with the sleeve, a pull ring is coaxially arranged in the adjusting sleeve, the pull ring can rotate relative to the adjusting sleeve and can move synchronously with the adjusting sleeve.

[0009] Further, the outer tube is screwed with the inner tube.

[0010] Further, the inner tube comprises a hose section and a hard tube section, the hose section and the hard tube section are coaxially arranged and fixedly connected, the hose section is located on the side of the hard tube section close to the forceps head along the axial direction of the hard tube section, and the spring is sleeved on the hose section.

[0011] Further, the outer tube is provided with a rotating handle.

[0012] Further, the outer tube is provided with a jackscrew, the jackscrew is arranged along the radial direction of the outer tube, and the jackscrew can abut against the inner tube.

[0013] Further, a ring groove is formed in the adjusting sleeve, the ring groove is coaxially arranged with the adjusting sleeve, and the pull ring is rotatably arranged in the ring groove.

[0014] The application further provides a use method of the foreign body forceps with adjustable rotation angle, which comprises the following steps: S10, one end of the handle member is held by hand, the outer tube is rotated relative to the inner tube, and the outer tube is moved relative to the inner tube; S20, the pulling wire is pulled to move relative to the outer tube, so that the spring is bent; S30, the forceps head clamps the foreign body, and the pull cable is moved by the handle member, so that the forceps head is retracted into the inner tube.

[0015] The foreign body forceps with adjustable rotation angle has the advantages that the outer tube, the inner tube, the forceps head and the handle member are cooperated, the bending angle of the forceps head is adjusted by rotating the outer tube relative to the inner tube, the forceps head is aligned with the foreign body without large-scale twisting of the hand holding part of the doctor, the stability and flexibility of operation are improved, the length of the spring extending out of the adjusting ring is adjusted by moving the outer tube relative to the inner tube according to the different positions of the foreign body in the body, the foreign body far away is conveniently clamped, and the adaptability to the foreign body in different positions in the body is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0017] Figure 1 A schematic diagram of the overall structure of an embodiment of a foreign body forceps with adjustable rotation angle of the present application; Figure 2 A close-up view of A in the above figure; Figure 1 A close-up view of B in the above figure; Figure 3 A split diagram of the overall structure of an embodiment of a foreign body forceps with adjustable rotation angle of the present application; Figure 4 Figure 3 A close-up view of D in the above figure; Figure 5 A close-up view of C in the above figure; Figure 3 A close-up view of E in the above figure; Figure 6 A split diagram of the overall structure of an embodiment of a foreign body forceps with adjustable rotation angle of the present application; Figure 7 Figure 6 A close-up view of F in the above figure; Figure 8 A close-up view of E in the above figure; Figure 6 A split diagram of the overall structure of an embodiment of a foreign body forceps with adjustable rotation angle of the present application after spring bending; Figure 9 A close-up view of F in the above figure. Figure 10 Figure 9 A close-up view of F in the above figure.

[0018] In the figure: 100, outer tube; 101, rotating handle; 102, observation window; 110, spring piece; 120, adjusting ring; 130, traction wire; 140, silicone strip; 200, inner tube; 201, hose section; 202, hard tube section; 203, scale; 210, spring; 300, forceps head; 400, handle component; 410, grip; 420, handle; 430, pull rod; 440, spring strip; 450, sleeve; 500, pull cable; 600, adjusting sleeve; 610, pull ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] An embodiment of a foreign body forceps with adjustable rotation angle of the present application is shown in Figures 1 to 10 .

[0021] ​​​The foreign body forceps with adjustable rotation angle comprises an outer tube 100, an inner tube 200, a forceps head 300 and a handle 400. The handle 400 is connected with the forceps head 300 through a pull cable 500. The inner tube 200 is sleeved on the pull cable 500 coaxially, and the handle 400 can drive the pull cable 500 to move and make the forceps head 300 retract into the inner tube 200, so that the forceps head 300 can lock the foreign body. A spring 210 is sleeved on the inner tube 200, and the spring 210 is located at an end of the inner tube 200 away from the handle 400 in the axial direction. The outer tube 100 is sleeved on the inner tube 200 coaxially, and the outer tube 100 can rotate relative to the inner tube 200 and can move axially relative to the inner tube 200. An adjusting ring 120 is connected to an end of the outer tube 100 away from the handle 400 in the axial direction through a spring plate 110, and the adjusting ring 120 is sleeved with the spring 210. A traction wire 130 is arranged through the outer tube 100, and the traction wire 130 can move relative to the outer tube 100 to make the spring 210 bend.

[0022] Specifically, the diameter of the outer tube 100 is 3mm, and the length is 500mm, which can meet the movement of the outer tube 100 and the inner tube 200 along the speculum.

[0023] In the use, after the position of the foreign body is determined, the doctor holds one end of the handle 400, and rotates the outer tube 100 relative to the inner tube 200 according to the position of the foreign body. The rotation of the outer tube 100 drives the traction wire 130 to rotate, and drives the adjusting ring 120 to rotate synchronously through the spring plate 110, so as to change the relative position of the outer tube 100 and the inner tube 200 in the circumferential direction. Then, the traction wire 130 is pulled to move relative to the outer tube 100, which drives the adjusting ring 120 to move synchronously, so that the adjusting ring 120 drives the spring 210 to bend through the spring plate 110. The bending of the spring 210 drives the inner tube 200 and the pull cable 500 in the inner tube 200 to bend, and drives the forceps head 300 to bend through the pull cable 500, so as to adjust the bending angle of the forceps head 300. When the forceps head 300 extends to the position of the foreign body (a pin), the forceps head 300 is aligned with the foreign body without large-scale torsion of the holding part of the doctor, which improves the stability and flexibility of the operation. The variable angle of the forceps head 300 can also disperse the bending position of the spring 210, avoid fatigue damage of the spring 210 due to the fixed bending position, and prolong the service life of the spring 210.

[0024] According to the different positions of the foreign matter in the body, the length of the spring 210 extending out of the adjusting ring 120 is adjusted by moving the outer tube 100 relative to the inner tube 200 and moving the adjusting ring 120 relative to the spring 210 by the outer tube 100. For the convenience of description, the spring 210 extending out of the adjusting ring 120 is called the adjustable segment, and when the traction wire 130 moves relative to the outer tube 100 to make the adjusting ring 120 bend the spring 210, the distance of the adjustable segment can be changed, which is more convenient for clamping the foreign matter at a farther position. For example, when the foreign matter in the stomach is clamped, because the stomach space is spacious, if the length of the adjustable segment is fixed, even if the spring 210 is bent, it cannot necessarily reach the foreign matter at a farther position. However, the embodiment can freely adjust the length of the adjustable segment by moving the outer tube 100 and the inner tube 200 relative to each other, thereby improving the adaptability to the foreign matter at different positions in the body.

[0025] After the foreign matter is found by the clamp head 300, the doctor can pull the pull rope 500 by the handle member 400, pull the clamp head 300 to retract into the inner tube 200 by the pull rope 500, so that the clamp head 300 can lock the foreign matter, and finally take out the foreign matter.

[0026] In a further embodiment, the clamp head 300 is a circular ring.

[0027] In use, the foreign matter is sleeved by the clamp head 300, and then the pull rope 500 is pulled by the handle member 400, the clamp head 300 is pulled to retract into the inner tube 200 by the pull rope 500, so that the space between the clamp head 300 and the foreign matter is reduced, and the clamp head 300 can lock the foreign matter. After the foreign matter is closed, the overall diameter is less than 8 mm, which can meet the overall retreat from the scope.

[0028] In a further embodiment, the handle member 400 includes a grip 410, a handle 420 and a pull rod 430. The grip 410 and the handle 420 are hinged and connected by a spring strip 440 and the handle 420. The grip 410 is fixedly provided with a sleeve 450, and the inner tube 200 is fixedly connected with the sleeve 450. The pull rod 430 is located in the sleeve 450 and coaxial with the sleeve 450, and the two ends of the pull rod 430 are connected with the pull rope 500 and the handle 420 respectively. Specifically, the pull rod 430 is fixedly connected with the pull rope 500, and the pull rod 430 is rotationally connected with the handle 420.

[0029] In the embodiment, the grip 410, the handle 420 and the pull rod 430 are provided, and in use, the doctor engages the grip 410 and the handle 420, so that the handle 420 moves the pull rope 500 by the pull rod 430, and the clamp head 300 at one end of the pull rope 500 can retract into the inner tube 200.

[0030] In a further embodiment, the outer tube 100 is screwed with an adjusting sleeve 600 along the axial direction away from one end of the jaw 300, the adjusting sleeve 600 is in sliding fit with the sleeve 450, and a pull ring 610 is coaxially arranged in the adjusting sleeve 600, the pull ring 610 can rotate relative to the adjusting sleeve 600 and can move synchronously with the adjusting sleeve 600.

[0031] Further, the outer tube 100 is screwed with the inner tube 200. The inner peripheral wall surface of the adjusting ring 120 is provided with threads for rotating fit with the spring 210, and the screw pitch between the outer tube 100 and the inner tube 200 is equal to the screw pitch of the spring 210, thereby limiting the rotation and movement of the outer tube 100 relative to the inner tube 200.

[0032] The adjusting sleeve 600 is provided with a ring groove coaxially arranged in the adjusting sleeve 600, and the pull ring 610 is rotatably installed in the ring groove, so that the pull ring 610 can rotate relative to the adjusting sleeve 600 and can move synchronously with the adjusting sleeve 600.

[0033] The inner tube 200 includes a hose section 201 and a hard tube section 202, which are coaxially arranged and fixedly connected, and the hose section 201 is located on the side of the hard tube section 202 close to the jaw 300 in the axial direction. The spring 210 is sleeved on the hose section 201. By arranging the hose section 201 and the hard tube section 202, the spring 210 can smoothly drive the hose section 201 of the inner tube 200 to bend.

[0034] Specifically, the outer tube 100 is provided with a rotating handle 101, and the surface of the rotating handle 101 is provided with a protrusion for anti-slip.

[0035] The outer tube 100 is provided with an observation port, and the observation port is provided with a transparent observation window 102. The inner tube 200 is provided with a scale 203. By arranging the observation window 102, the relative displacement distance between the inner tube 200 and the outer tube 100 can be easily known.

[0036] In this embodiment, the adjusting sleeve 600 and the pull ring 610 are arranged, and when the bending angle of the jaw 300 needs to be adjusted, the outer tube 100 and the adjusting sleeve 600 are simultaneously rotated, so that the outer tube 100, the traction wire 130, the pull ring 610 and the adjusting sleeve 600 are in a relatively static state at this time.

[0037] Because the outer tube 100 is screwed with the inner tube 200, the outer tube 100 moves while rotating, and changes the distance between the adjustable section of the spring 210 and the adjusting ring 120. In use, the pitch between the outer tube 100 and the inner tube 200 can be set to change the change amount of the adjustable section of the spring 210 after the outer tube 100 rotates one round, so that when only the bending angle of the clamp head 300 needs to be adjusted, the change amount of the length of the adjustable section of the spring 210 is not large even if the outer tube 100 rotates one round, and on this basis, the manual rotation of the doctor does not affect the normal clamping of the foreign matter.

[0038] When the change amount of the adjustable section of the spring 210 needs to be increased to adapt to the foreign matter in different positions in the body, the bending angle of the clamp head 300 is not considered at this time, the outer tube 100 and the adjusting sleeve 600 are rotated at the same time, the outer tube 100 moves while rotating, and is coarsely adjusted until the length of the adjustable section is sufficient to reach the foreign matter, and then the bending angle of the clamp head 300 is finely adjusted to make the foreign matter be smoothly reached.

[0039] After the adjustment is completed, the adjusting sleeve 600 is rotated alone, the adjusting sleeve 600 moves relative to the outer tube 100 while rotating, and at this time, the pull ring 610 moves and rotates relative to the adjusting sleeve 600 in synchronization, the pull ring 610 moves to pull the traction wire 130, and then pulls the adjusting ring 120 to move in synchronization, so that the adjusting ring 120 drives the spring 210 to bend.

[0040] In a further embodiment, a top wire is arranged on the outer tube 100, the top wire is arranged in the radial direction of the outer tube 100, and the top wire can abut against the inner tube 200. The top wire is not indicated in the drawings.

[0041] In this embodiment, the top wire is arranged, when the adjusting sleeve 600 is rotated alone, at this time, because the outer tube 100 is screwed with the inner tube 200 and the adjusting sleeve 600, the adjusting sleeve 600 can drive the outer tube 100 to rotate at the same time, so in order to limit the rotation of the outer tube 100, the top wire is used to lock the outer tube 100 and the inner tube 200 together when the adjusting sleeve 600 is rotated alone, and the stability of rotation is increased.

[0042] In a further embodiment, a silica gel strip 140 is further connected between the adjusting ring 120 and the outer tube 100, and the silica gel strip 140 is arranged opposite to the traction wire 130 in the radial direction of the adjusting ring 120.

[0043] By setting the silica gel strip 140, when the traction wire 130 moves relative to the outer tube 100 and the adjusting ring 120 drives the spring 210 to bend, the distance between the adjacent two turns of the spring 210 on the side (inner side) of the traction wire 130 will become smaller, and the distance between the adjacent two turns of the spring 210 on the side (outer side) of the silica gel strip 140 will become larger. By setting the silica gel strip 140, it can be avoided that the spring 210 pinches the internal tissues of the human body when the spring 210 is reset.

[0044] In combination with the above embodiment, the specific working process is as follows: In use, after the position of the foreign matter is determined, the doctor holds one end of the handpiece 400, and then adjusts according to the position of the foreign matter. Specifically, when the bending angle of the clamp head 300 needs to be adjusted, the outer tube 100 and the adjusting sleeve 600 are simultaneously rotated, so that the outer tube 100, the traction wire 130, the pull ring 610 and the adjusting sleeve 600 are in a relatively static state at this time.

[0045] Because the outer tube 100 is screwed with the inner tube 200, the outer tube 100 moves while rotating, changing the distance of the adjustable section of the spring 210 from the adjusting ring 120. In use, the pitch between the outer tube 100 and the inner tube 200 can be set to change the change amount of the adjustable section of the spring 210 after the outer tube 100 rotates one turn, so that when only the bending angle of the clamp head 300 needs to be adjusted, even if the outer tube 100 rotates one turn, the change amount of the length of the adjustable section of the spring 210 is not large, and on this basis, in cooperation with the manual rotation of the doctor, the normal clamping of the foreign matter will not be affected.

[0046] When the change amount of the adjustable section of the spring 210 needs to be increased to adapt to the foreign matter in different positions in the body, the bending angle of the clamp head 300 is not considered at this time, and the outer tube 100 is first rotated and moved by simultaneously rotating the outer tube 100 and the adjusting sleeve 600, for coarse adjustment, until the length of the adjustable section is sufficient to reach the foreign matter, and then the bending angle of the clamp head 300 is adjusted by fine adjustment, so that the foreign matter can be smoothly reached.

[0047] After the adjustment is completed, the adjusting sleeve 600 is rotated alone, the adjusting sleeve 600 moves relative to the outer tube 100 while rotating, and at this time the pull ring 610 moves and rotates relative to the adjusting sleeve 600 synchronously, the pull ring 610 moves to pull the traction wire 130 to move, and then the adjusting ring 120 moves synchronously, so that the adjusting ring 120 drives the spring 210 to bend, and the bending angle of the clamp head 300 is adjusted, so that the clamp head 300 is aligned with the foreign matter while the hand holding part of the doctor does not twist in a large range, thereby improving the stability and flexibility of the operation.

[0048] Then the foreign object is caught by the jaw 300, the handle 420 is moved by engaging the grip 410 and the handle 420 through the pull rod 430 to pull the cable 500, so that the jaw 300 at one end of the cable 500 can be retracted into the inner tube 200, the space between the jaw 300 and the foreign object is reduced, the jaw 300 can lock the foreign object, and finally the foreign object is taken out.

[0049] The application further provides a use method of the foreign object forceps with adjustable rotation angle, which utilizes the foreign object forceps with adjustable rotation angle and comprises the following steps. S10, one end of the hand-held handle assembly 400 is held, the outer tube 100 is rotated relative to the inner tube 200, and the outer tube 100 is moved relative to the inner tube 200; S20, the traction wire 130 is pulled to move relative to the outer tube 100, so that the spring 210 is bent; S30, the jaw 300 clamps the foreign object, and the cable 500 is moved by the handle assembly 400 to retract the jaw 300 into the inner tube 200.

[0050] The above only describes the preferred embodiments of the application and is not used to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A foreign object clamp with adjustable rotation angle, characterized in that: It includes an outer tube, an inner tube, a clamp head, and a handle. The handle is connected to the clamp head via a cable. The inner tube is sleeved outside the cable and coaxial with it. The handle can move the cable and retract the clamp head into the inner tube. A spring is fitted on the inner tube, located at the end of the inner tube away from the handle in its axial direction. The outer tube is sleeved outside the inner tube and coaxial with it. The outer tube can rotate relative to the inner tube and move axially relative to it. An adjusting ring is connected to the end of the outer tube away from the handle via a spring clip, and the adjusting ring is sleeved with the spring. A traction wire is threaded through the outer tube, and the traction wire can move relative to the outer tube, causing the spring to bend.

2. The adjustable rotation angle foreign object clamp according to claim 1, characterized in that: The pliers have a ring-shaped head.

3. The adjustable rotation angle foreign object clamp according to claim 1, characterized in that: The handle assembly includes a grip, a handle, and a lever; the grip and handle are hinged together and connected to the handle via a spring clip; a sleeve is fixedly installed on the grip, and an inner tube is fixedly connected to the sleeve; the lever is located inside the sleeve and is coaxial with the sleeve, and both ends of the lever are connected to a cable and the handle, respectively.

4. The adjustable rotation angle foreign object clamp according to claim 3, characterized in that: An adjusting sleeve is screwed to the end of the outer tube away from the pliers along its axis. The adjusting sleeve slides with the tube. A pull ring is coaxially installed inside the adjusting sleeve. The pull ring can rotate relative to the adjusting sleeve and can move synchronously with the adjusting sleeve.

5. The adjustable rotation angle foreign object clamp according to claim 1, characterized in that: The outer tube and the inner tube are screwed together.

6. The foreign object clamp with adjustable rotation angle according to claim 1, characterized in that: The inner tube includes a flexible section and a rigid section, which are coaxially arranged and fixedly connected. The flexible section is located on the side of the rigid section closer to the clamp head in the axial direction. The spring is sleeved on the flexible section.

7. The foreign object clamp with adjustable rotation angle according to claim 1, characterized in that: A rotating handle is installed on the outer tube.

8. The foreign object clamp with adjustable rotation angle according to claim 1, characterized in that: The outer tube is equipped with a set screw, which is arranged along the radial direction of the outer tube and can abut against the inner tube.

9. A foreign object clamp with adjustable rotation angle according to claim 4, characterized in that: The adjusting sleeve has an annular groove, which is coaxial with the adjusting sleeve, and the pull ring is rotatably installed in the annular groove.

10. A method of using a foreign object clamp with adjustable rotation angle, comprising the foreign object clamp with adjustable rotation angle according to any one of claims 1 to 9, characterized in that: Includes the following steps: S10, hold one end of the handle to rotate the outer tube relative to the inner tube and move the outer tube relative to the inner tube; S20, pulls the traction wire to move relative to the outer tube, causing the spring to bend; S30 causes the pliers to grip the foreign object and moves the cable via the handle, causing the pliers to retract into the inner tube.

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