Rotatable angle adjustable foreign body forceps and method of use

Abstract

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. The foreign body forceps with adjustable rotation angle comprises 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, and 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, the outer tube is sleeved outside the inner tube and coaxial with the inner tube, and the outer tube can rotate relative to the inner tube and move axially relative to the inner tube. The foreign body forceps with adjustable rotation angle can adjust the bending angle of the forceps head by rotating the outer tube relative to the inner tube, thereby improving the stability and flexibility of operation. According to the different positions of the foreign body in the body, the length of the spring extending outside the adjusting ring is adjusted by moving the outer tube relative to the inner tube, thereby improving the adaptability to the foreign body in different positions in the body.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a foreign body forceps with adjustable rotation angle and its usage method. Background Technology

[0002] Foreign body forceps are an important tool in medical devices, mainly used for clamping and retrieving objects during surgery. Commonly used foreign body forceps mainly consist of an outer tube, a forceps head, a retaining handle, and a sliding handle. The forceps head has a flexible wire loop structure, facilitating the clamping of items such as pins. The forceps head can retract inside the outer tube. When using foreign body forceps to remove foreign objects from the body, first, the endoscope is inserted to the location of the foreign object. Then, the forceps extend from the tip of the endoscope, bringing the forceps head close to the foreign object. Next, the handle is pulled to ensure the forceps head has locked onto the foreign object, and then the forceps and endoscope are slowly withdrawn.

[0003] However, when using them, the angle of the pliers head in the circumferential direction is achieved by rotating the handle. Since the range of human hand rotation is limited, if the foreign object is located outside the range of human hand rotation, the angle of the pliers head is not easy to adjust, and the stability of the hand grip will also be affected, which may easily lead to failure to grip. Summary of the Invention

[0004] This invention provides a foreign object clamp with an adjustable rotation angle and a method of use, to solve the problem that the angle of the clamp head in the circumferential direction of existing foreign object clamps is achieved by rotating the handle, and the angle of the clamp head is inconvenient to adjust if the foreign object is outside the range of hand twisting.

[0005] The present invention provides a foreign object clamp with adjustable rotation angle, comprising 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, and the handle can drive the cable to move and retract the clamp head into the inner tube; a spring is sleeved on the inner tube, the spring being 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 being able to rotate relative to the inner tube and move axially relative to the inner tube; an adjusting ring is connected to the end of the outer tube away from the handle in its axial direction via a spring piece, the adjusting ring being sleeved with the spring; a traction wire is threaded through the outer tube, the traction wire being able to move relative to the outer tube, causing the spring to bend.

[0006] Furthermore, the pliers head is ring-shaped.

[0007] Furthermore, the handle assembly includes a grip, a handle, and a pull rod; 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 pull rod is located inside the sleeve and is coaxial with the sleeve, and both ends of the pull rod are connected to a cable and a handle, respectively.

[0008] Furthermore, an adjusting sleeve is screwed to the end of the outer tube away from the pliers along its axial direction. The adjusting sleeve is in sliding fit with the sleeve. A pull ring is coaxially arranged inside the adjusting sleeve. The pull ring can rotate relative to the adjusting sleeve and can move synchronously with the adjusting sleeve.

[0009] Furthermore, the outer tube and the inner tube are screwed together.

[0010] Furthermore, 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 its axial direction; a spring is sleeved on the flexible section.

[0011] Furthermore, a rotating handle is provided on the outer tube.

[0012] Furthermore, a set screw is provided on the outer tube, which is arranged in the radial direction of the outer tube and can abut against the inner tube.

[0013] Furthermore, an annular groove is provided inside the adjusting sleeve, and the annular groove is coaxially arranged with the adjusting sleeve, with the pull ring rotatably installed in the annular groove.

[0014] This invention also provides a method for using a foreign object clamp with an adjustable rotation angle, comprising the following steps:

[0015] 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;

[0016] S20, pulls the traction wire to move relative to the outer tube, causing the spring to bend;

[0017] 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.

[0018] The beneficial effects of this invention are as follows: This invention provides a foreign body forceps with an adjustable rotation angle. By configuring an outer tube, an inner tube, a forceps head, and a handle, the bending angle of the forceps head can be adjusted by rotating the outer tube relative to the inner tube. This ensures that the forceps head is aligned with the foreign body without significant twisting of the doctor's grip, improving operational stability and flexibility. Furthermore, depending on the location of the foreign body, the length of the spring extending beyond the adjusting ring can be adjusted by moving the outer tube relative to the inner tube, facilitating the removal of foreign bodies at greater distances and improving adaptability to foreign bodies in different locations within the body. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the foreign object clamp with adjustable rotation angle according to the present invention;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is an exploded view of the overall structure of an embodiment of the adjustable rotation angle foreign object clamp of the present invention;

[0023] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 for Figure 3 Enlarged view of point C in the middle;

[0025] Figure 6 This is a cross-sectional view of the overall structure of an embodiment of the adjustable rotation angle foreign object clamp of the present invention;

[0026] Figure 7 for Figure 6 Enlarged view at point D;

[0027] Figure 8 for Figure 6 Enlarged view at point E in the middle;

[0028] Figure 9 This is a schematic diagram of the spring after bending in an embodiment of the adjustable rotation angle foreign object clamp of the present invention;

[0029] Figure 10 for Figure 9 Enlarged view of point F in the middle.

[0030] In the diagram: 100, outer tube; 101, rotating handle; 102, observation window; 110, spring; 120, adjusting ring; 130, traction wire; 140, silicone strip; 200, inner tube; 201, flexible tube section; 202, rigid tube section; 203, scale; 210, spring; 300, pliers head; 400, handle piece; 410, grip; 420, handle; 430, pull rod; 440, spring bar; 450, sleeve; 500, cable; 600, adjusting sleeve; 610, pull ring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] An embodiment of the present invention, a foreign body clamp with adjustable rotation angle, is as follows: Figures 1 to 10 As shown.

[0033] An adjustable-angle foreign object clamp includes an outer tube 100, an inner tube 200, a clamp head 300, and a handle 400. The handle 400 is connected to the clamp head 300 via a cable 500. The inner tube 200 is sleeved on the cable 500 and coaxial with it. The handle 400 can move the cable 500 and retract the clamp head 300 into the inner tube 200, thereby locking the clamp head 300 with a foreign object. A spring 210 is sleeved on the inner tube 200, located at the end of the inner tube 200 away from the handle 400 along its axial direction. The outer tube 100 is sleeved on the inner tube 200 and coaxial with it. 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 one end of the outer tube 100 away from the handle 400 along its axial direction via a spring 110. The adjusting ring 120 is sleeved with a spring 210. A traction wire 130 is threaded through the outer tube 100. The traction wire 130 can move relative to the outer tube 100, causing the spring 210 to bend.

[0034] Specifically, the outer tube 100 has a diameter of 3mm and a length of 500mm, which allows the outer tube 100 and the inner tube 200 to move along the endoscope.

[0035] This embodiment uses an outer tube 100, an inner tube 200, a forceps head 300, and a handle 400. In use, after determining the location of the foreign object, 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 object. The rotation of the outer tube 100 drives the traction wire 130 to rotate, which in turn drives the adjusting ring 120 to rotate synchronously via the spring 110, changing 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. The movement of the traction wire 130 pulls the adjusting ring 120 to move synchronously, causing the adjusting ring 120 to bend the spring 210 via the spring piece 110. The bending of the spring 210 causes the inner tube 200 and the pull cable 500 located in the inner tube 200 to bend, which in turn causes the forceps head 300 to bend. The bending angle of the forceps head 300 is adjusted. When the forceps head 300 is extended to the location of the foreign object (pin), it is aligned with the foreign object without large-scale twisting of the doctor's hand, improving the stability and flexibility of the operation. Furthermore, the variable angle of the forceps head 300 can also disperse the bending part of the spring 210, avoiding fatigue damage caused by the fixed bending position of the spring 210, and extending the service life of the spring 210.

[0036] Furthermore, depending on the location of the foreign object inside the body, the length of the spring 210 extending beyond the adjusting ring 120 is adjusted by moving the outer tube 100 relative to the inner tube 200, and by the outer tube 100 driving the adjusting ring 120 to move relative to the spring 210. For ease of explanation, the spring 210 extending beyond the adjusting ring 120 is referred to as the adjustable section. When the traction wire 130 moves relative to the outer tube 100, causing the adjusting ring 120 to bend the spring 210, the distance of the adjustable section can be varied, making it easier to grasp foreign objects at greater distances. For example, when grasping a foreign object located in the stomach, because the stomach space is open, if the length of the adjustable section is fixed, even if the spring 210 bends, it may not be able to reach foreign objects at greater distances. However, in this embodiment, by moving the outer tube 100 and the inner tube 200 relative to each other, the length of the adjustable section can be adjusted more freely, improving adaptability to foreign objects in different locations inside the body.

[0037] After the forceps 300 locates the foreign object, the doctor can pull the cable 500 through the handle 400. The cable 500 will then pull the forceps 300 back into the inner tube 200, allowing the forceps 300 to lock the foreign object and finally remove it.

[0038] In a further embodiment, the clamp head 300 is annular.

[0039] In use, the pliers 300 is used to enclose the foreign object. Then, the handle 400 is used to pull the cable 500, which in turn retracts the pliers 300 into the inner tube 200, reducing the space between the pliers 300 and the foreign object, allowing the pliers 300 to lock the foreign object in place. After closing the foreign object, the overall diameter is less than 8mm, which is sufficient for complete retraction from the endoscope.

[0040] In a further embodiment, the handle component 400 includes a grip 410, a handle 420, and a pull rod 430. The grip 410 and the handle 420 are hinged and connected to the handle 420 via a spring clip 440. A sleeve 450 is fixedly mounted on the grip 410, and the inner tube 200 is fixedly connected to the sleeve 450. The pull rod 430 is located inside the sleeve 450 and coaxial with the sleeve 450. Both ends of the pull rod 430 are connected to the cable 500 and the handle 420, respectively. Specifically, the pull rod 430 is fixedly connected to the cable 500, and the pull rod 430 is rotatably connected to the handle 420.

[0041] In this embodiment, by setting up a grip 410, a handle 420 and a lever 430, when in use, the doctor engages the grip 410 and the handle 420, so that the handle 420 pulls the cable 500 through the lever 430, so that the forceps head 300 at one end of the cable 500 can retract into the inner tube 200.

[0042] In a further embodiment, an adjusting sleeve 600 is screwed to one end of the outer tube 100 away from the pliers head 300 along its axial direction. The adjusting sleeve 600 is slidably engaged with the sleeve 450. A pull ring 610 is coaxially arranged inside 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.

[0043] Furthermore, the outer tube 100 is screwed to the inner tube 200. The inner circumferential wall of the adjusting ring 120 is provided with a thread for rotating with the spring 210. The pitch of the screw connection between the outer tube 100 and the inner tube 200 is equal to the pitch of the spring 210, thereby limiting the rotation and movement of the outer tube 100 relative to the inner tube 200.

[0044] The adjusting sleeve 600 has an annular groove, which is coaxially arranged with the adjusting sleeve 600. The pull ring 610 is rotatably installed in the annular groove, so that the pull ring 610 can rotate relative to the adjusting sleeve 600 and move synchronously with the adjusting sleeve 600.

[0045] The inner tube 200 includes a flexible tube section 201 and a rigid tube section 202, which are coaxially arranged and fixedly connected. The flexible tube section 201 is located on the side of the rigid tube section 202 closer to the pliers head 300 along its axial direction. A spring 210 is sleeved on the flexible tube section 201. By setting the flexible tube section 201 and the rigid tube section 202, the spring 210 can smoothly drive the flexible tube section 201 of the inner tube 200 to bend.

[0046] Specifically, the outer tube 100 is provided with a rotating handle 101, and the surface of the rotating handle 101 is provided with protrusions for anti-slip purposes.

[0047] An observation port is provided on the outer tube 100, and a transparent observation window 102 is provided on the observation port. A scale 203 is provided on the inner tube 200. By providing the observation window 102, the relative displacement distance between the inner tube 200 and the outer tube 100 can be easily determined.

[0048] In this embodiment, by setting an adjusting sleeve 600 and a pull ring 610, when it is necessary to adjust the bending angle of the pliers head 300, the outer tube 100 and the adjusting sleeve 600 are rotated at the same time, 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.

[0049] Since the outer tube 100 is screwed to the inner tube 200, the outer tube 100 will rotate and move simultaneously, changing the distance by which the adjustable section of the spring 210 extends beyond the adjusting ring 120. During use, the pitch between the outer tube 100 and the inner tube 200 can be adjusted to change the amount of change in the adjustable section of the spring 210 after one rotation of the outer tube 100. This ensures that when only the bending angle of the forceps head 300 needs adjustment, even if the outer tube 100 rotates one full turn, the change in the length of the adjustable section of the spring 210 is not significant. Combined with the doctor's manual rotation, this will not affect the normal clamping of foreign objects.

[0050] When it is necessary to increase the amount of change in the adjustable section of the spring 210 to accommodate foreign objects in different positions within the body, the bending angle of the pliers 300 should not be considered at first. Instead, the outer tube 100 and the adjusting sleeve 600 should be rotated simultaneously to make the outer tube 100 rotate and move, and a coarse adjustment should be made until the length of the adjustable section is sufficient to reach the foreign object. Then, the bending angle of the pliers 300 should be changed by fine adjustment so that the foreign object can be reached smoothly.

[0051] After adjustment, rotate the adjusting sleeve 600 alone. The adjusting sleeve 600 will rotate and move relative to the outer tube 100. At this time, the pull ring 610 moves synchronously and rotates relative to the adjusting sleeve 600. The movement of the pull ring 610 will pull the traction wire 130 to move, which in turn will pull the adjusting ring 120 to move synchronously, causing the adjusting ring 120 to drive the spring 210 to bend.

[0052] In a further embodiment, a set screw is provided on the outer tube 100, the set screw being arranged radially along the outer tube 100, and the set screw being able to abut against the inner tube 200. The set screw is not shown in the accompanying drawings.

[0053] In this embodiment, by setting a set screw, when the adjusting sleeve 600 is rotated alone, since the outer tube 100 is simultaneously screwed to the inner tube 200 and the adjusting sleeve 600, the adjusting sleeve 600 may drive the outer tube 100 to rotate at the same time. Therefore, in order to limit the rotation of the outer tube 100, when the adjusting sleeve 600 is rotated alone, the set screw is used to lock the outer tube 100 and the inner tube 200 together, thereby increasing the stability of the rotation.

[0054] In a further embodiment, a silicone strip 140 is also connected between the adjusting ring 120 and the outer tube 100, and the silicone strip 140 and the traction wire 130 are arranged opposite to each other in the radial direction of the adjusting ring 120.

[0055] By setting the silicone strip 140, when the traction wire 130 moves relative to the outer tube 100, causing the adjusting ring 120 to bend the spring 210, the distance between two adjacent coils of the spring 210 located on the inner side of the traction wire 130 will become smaller, and the distance between two adjacent coils of the spring 210 located on the outer side of the silicone strip 140 will become larger. By setting the silicone strip 140, it is possible to prevent the spring 210 from pinching and injuring the internal tissues of the human body when the spring 210 returns to its original position.

[0056] Based on the above embodiments, the specific working process is as follows:

[0057] When using the device, after determining the location of the foreign object, the doctor holds one end of the handle 400 and adjusts it according to the location of the foreign object. Specifically, when it is necessary to adjust the bending angle of the forceps head 300, the outer tube 100 and the adjusting sleeve 600 are rotated simultaneously, so that the outer tube 100, the traction wire 130, the pull ring 610 and the adjusting sleeve 600 are in a relatively stationary state.

[0058] Since the outer tube 100 is screwed to the inner tube 200, the outer tube 100 will rotate and move simultaneously, changing the distance by which the adjustable section of the spring 210 extends beyond the adjusting ring 120. During use, the pitch between the outer tube 100 and the inner tube 200 can be adjusted to change the amount of change in the adjustable section of the spring 210 after one rotation of the outer tube 100. This ensures that when only the bending angle of the forceps head 300 needs adjustment, even if the outer tube 100 rotates one full turn, the change in the length of the adjustable section of the spring 210 is not significant. Combined with the doctor's manual rotation, this will not affect the normal clamping of foreign objects.

[0059] When it is necessary to increase the amount of change in the adjustable section of the spring 210 to accommodate foreign objects in different positions within the body, the bending angle of the pliers 300 should not be considered at first. Instead, the outer tube 100 and the adjusting sleeve 600 should be rotated simultaneously to make the outer tube 100 rotate and move, and a coarse adjustment should be made until the length of the adjustable section is sufficient to reach the foreign object. Then, the bending angle of the pliers 300 should be changed by fine adjustment so that the foreign object can be reached smoothly.

[0060] After adjustment, rotate the adjusting sleeve 600 separately. The adjusting sleeve 600 will rotate and move relative to the outer tube 100. At this time, the pull ring 610 moves synchronously and rotates relative to the adjusting sleeve 600. The movement of the pull ring 610 will pull the traction wire 130 to move, which in turn will pull the adjusting ring 120 to move synchronously. This causes the adjusting ring 120 to drive the spring 210 to bend, thereby adjusting the bending angle of the forceps head 300. This ensures that the forceps head 300 is aligned with the foreign object without large-scale twisting of the part held by the doctor, thus improving the stability and flexibility of the operation.

[0061] Then, the foreign object is caught by the pliers 300. By engaging the handle 410 and the lever 420, the lever 420 pulls the cable 500 via the pull rod 430, allowing the pliers 300 at one end of the cable 500 to retract into the inner tube 200, reducing the space between the pliers 300 and the foreign object, thus locking the foreign object in place, and finally removing the foreign object.

[0062] This invention also provides a method for using a foreign object clamp with an adjustable rotation angle, comprising the following steps:

[0063] S10, hold one end of the handle 400 to rotate the outer tube 100 relative to the inner tube 200 and move the outer tube 100 relative to the inner tube 200;

[0064] S20, pull the traction wire 130 to move relative to the outer tube 100, causing the spring 210 to bend;

[0065] S30 causes the pliers 300 to clamp the foreign object and, through the handle 400, drives the cable 500 to move, causing the pliers 300 to retract into the inner tube 200.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A foreign object clamp with adjustable rotation angle, characterized in that: The device 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 fitted over the cable and is 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 along its axis. The outer tube is fitted over the inner tube and is 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 along its axis via a spring clip. The adjusting ring is fitted with a spring. A traction wire is threaded through the outer tube and connected to one end of the adjusting ring. 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. The other end of the traction wire is connected to the pull ring.

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.

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