Custom configurable and removable minimally invasive hemostatic forceps

Abstract

A custom-configurable and removable minimally invasive hemostat is provided, which has the effect of improving stability of the hemostat during surgical procedures. [Solution] A customizable and removable minimally invasive hemostatic forceps includes a distal tip, a gripping portion, and a flexible connecting member connected between the distal tip and the gripping portion. A wire rope is provided between the distal tip and the gripping portion. The wire rope is provided with a plurality of connecting blocks, each of which has a ball stud at one end and an arcuate surface at the other end. The ball stud is located within the adjacent arcuate surface. The gripping portion is provided with a locking portion for tightening the wire rope. The locking portion includes a rotating handle, a connecting body, and an engaging seat. The rotating handle is fitted onto the outside of the connecting body. A threaded rod is provided within the rotating handle. The engaging seat is located on the side of the threaded rod closest to the wire rope. A wire joint is provided on the side of the wire rope closest to the gripping portion. A positioning block is provided on the side of the wire joint closest to the distal tip.

Description

[Technical Field]

[0001] FIELD OF THE INVENTION The present invention relates to the field of medical instruments, and more particularly to a custom configurable and removable minimally invasive hemostat. [Background technology]

[0002] Currently, hemostatic forceps are an essential tool in surgical procedures, used to clamp different surgical wound surfaces to stop bleeding, which is beneficial to protecting the life safety of patients and facilitating doctors' surgical procedures.

[0003] For related technology, see Chinese patent publication number CN219070489U, which discloses a new type of endoscopic hemostat including a grip to which a shaft is movably connected at one end. The shaft is provided with a plurality of links, and two adjacent links are tightly fitted to the connecting portion. A pivot pin is attached between the grip and the shaft, which is used to adjust the angle of the grip relative to the shaft. A forceps assembly is detachably attached to the end of the shaft away from the grip. The adjustable telescopic and angle-adjustable shaft of this invention makes operation more convenient and labor-saving for doctors during surgery, and the replaceable tip expands the functional range of the hemostat.

[0004] In the above-mentioned related art, the distal tip and grip of the hemostat are rotatably connected via a pivot pin, and the two are relatively fixed by the frictional force between the pivot pin. During use, the set configuration can become unstable due to the repulsive force of the wound tissue or surgical adjustment, which can easily affect the surgical operation and is detrimental to the stability of the hemostat during surgical operation. Summary of the Invention [Problem to be solved by the invention]

[0005] The present application provides a custom configurable and removable minimally invasive hemostat to improve stability during surgical manipulation of the hemostat. [Means for solving the problem]

[0006] The customizable and removable minimally invasive hemostatic forceps according to the present application includes a gripping portion, a distal tip, and a flexible transmission member connected between the gripping portion and the distal tip, the gripping portion controlling the opening and closing of the distal tip via the flexible transmission member, the flexible transmission member being bendable along a radial direction, and further including a wire rope positioned between the distal tip and the gripping portion, the wire rope having a connecting post at an end close to the distal tip, the connecting post connected to the distal tip, and a toothed connecting member at the other end, the wire rope passing through the toothed connecting member along its length and slidably connected to the toothed connecting member, the toothed connecting member connected to the end of the gripping portion close to the distal tip, and a plurality of connecting blocks provided between the toothed connecting member and the connecting post. a ball stud is fixed to one end of the connecting block, and an arcuate surface is formed on the other end to fit the ball stud; the ball stud of one connecting block is located within the arcuate surface of the adjacent connecting block and is attached to the arcuate surface; movable cavities are formed in both the connecting blocks and the ball studs along the length of the wire rope; the wire rope passes through all the movable cavities in turn, and the diameters of the movable cavities gradually increase from the center toward both ends, thereby providing a movable space for the wire rope and connecting blocks to deflect radially; the smallest diameter at the center of the movable cavity fits the outer diameter of the wire rope; and a locking portion is provided on the gripping portion for tightening the wire rope.

[0007] By adopting the above technical solution, when the user clamps or loosens the gripper, the user can use the flexible transmission member to drive the opening and closing of the tip, and adjust the contact angle between the ball stud and the arcuate surface to adjust the gripper and the tip to the desired angle. The movable cavity radially accommodates and restricts the position of the wire rope, and the locking member tightens the wire rope. The connecting post and the toothed connecting member combine to restrict the position of the connecting block in the axial direction. Furthermore, the tightened wire rope causes adjacent connecting blocks to be tightly tensioned against each other, thereby fixing the angle between the tip and the gripper and improving the stability of the hemostat operation.

[0008] Optionally, the gripper has a guide cavity, the toothed connecting member is located at an end of the guide cavity close to the tip, the wire rope passes through the toothed connecting member and extends into the guide cavity, a wire joint is fixed to the end of the wire rope remote from the connecting post, the wire joint is located in the guide cavity and slides along the axial direction of the guide cavity, the locking part includes a rotating handle, a connecting body and an engaging seat, the connecting body is connected to the outside of the gripper and communicates with the guide cavity, a threaded rod is provided on the rotating handle, the threaded rod passes through the connecting body and is screwed to the connecting body, and the engaging seat is provided on the side of the threaded rod close to the wire rope, the threaded rod drives the engaging seat towards the wire joint when it rotates, and the engaging seat presses the wire joint away from the tip when it contacts the wire joint.

[0009] By adopting the above technical solution, under the supporting action of the gripping part, the guide cavity guides and positions the wire joint, the connecting body guides and positions the threaded rod along the vertical direction, and the rotating handle is rotated to move the threaded rod along the vertical direction, and the threaded rod presses the engaging seat toward or away from the wire joint, thereby tightening or loosening the wire rope, and further releasing or reinforcing the fixation between the connecting blocks, and finally realizing the fixation or restoration of the angle between the tip and the gripping part, which is advantageous to improving the ease of operation of the device.

[0010] Optionally, the rotating handle includes a threaded bushing and a rotating plate, the threaded bushing is fitted on the outside of the connecting body, the threaded rod is arranged coaxially with the inner wall of the threaded bushing and rotates synchronously with the threaded bushing, the rotating plate is located on the outside of the threaded bushing, a first position control pin is provided between the rotating plate and the threaded bushing, an annular groove is opened along the circumferential direction on the outer wall of the connecting body, the width of the annular groove is larger than the diameter of the first position control pin, and the first position control pin passes through the rotating plate and the threaded bushing in order and is located in the annular groove.

[0011] By adopting the above technical solution, the annular groove supports and restricts the position of the first position restricting pin, thereby preventing the threaded bushing from completely detaching from the connecting body; the rotating plate is easy for a user to grasp and rotate; when a user rotates the rotating plate, the rotating plate drives the synchronous rotation of the threaded rod via the threaded bushing; and the first position restricting pin detachably connects the threaded bushing and the rotating plate, which facilitates cleaning the inside of the connecting body and the rotating handle and is advantageous in improving the convenience of cleaning the hemostat.

[0012] Optionally, the connecting body is arranged perpendicular to the wire joint, a position limiting block is coaxially fixed to the end of the wire joint that is closer to the tip, a first inclined surface is provided at the lower end of the engagement seat, and a second inclined surface corresponding to the first inclined surface is provided on the position limiting block, and when the first inclined surface contacts the second inclined surface, it applies a thrust to the position limiting block to move it away from the tip.

[0013] By arranging the connecting body perpendicular to the wire joint, the rotating handle is closer to the user's hand, making it easier for the user to adjust, and the engaging seat applies thrust to the position control block through the first inclined surface, and the second inclined surface is advantageous in increasing the contact area between the position control block and the engaging seat, improving the stability of the pushing action of the engaging seat against the wire joint and further realizing tightening or loosening of the wire rope, which is advantageous in improving the convenience of using the wire rope.

[0014] Optionally, a recess groove suitable for the wire rope is provided at the lower end of the engaging seat, the engaging seat is rotatably connected to the threaded rod around the axis of the threaded rod, and a second position control pin is provided on the outer circle of the engaging seat, a second position control groove is provided on the connecting body along the length of the threaded rod, and the second position control pin is located in the second position control groove and slides along the length of the second position control groove.

[0015] By adopting the above technical solution, when the engaging seat moves in the vertical direction, the second positioning groove guides and positions the first positioning pin, and when the threaded rod drives the engaging seat to move in the axial direction, the engaging seat is prevented from rotating synchronously with the threaded rod. As a result, the engaging seat is always aligned with the wire rope in the process of approaching the wire rope, and when the engaging seat moves toward the wire rope, the escape groove escapes the wire rope, which further expands the movable range of the engaging seat and is advantageous to improving the stability of the operation of the hemostat.

[0016] Optionally, the radial cross section of the wire joint is polygonal, a collar is fitted to the outside of the wire joint, and the inner wall of the collar is attached to the outer edge of the wire joint, a locking groove is opened along the length of the collar, and a locking pin is provided on the gripping portion, the locking pin passes through the gripping portion and extends into the locking groove, and the locking pin is attached to the inner wall of the locking groove.

[0017] By adopting the above technical solution, the locking pin restricts the position of the collar in the circumferential direction by the locking groove, thereby realizing the restriction of the collar's rotation in the circumferential direction of the wire joint, which is advantageous in further improving the stability of the wire rope operation.

[0018] Optionally, the toothed connecting member includes a toothed tube and a threaded tube, the toothed tube is fixed coaxially with the threaded tube, the wire rope passes through the toothed tube and the threaded tube in order, and the threaded tube is inserted into the guide cavity and screwed onto the inner wall of the guide cavity.

[0019] The toothed tube in the above technical solution is advantageous in that it is easy for the user to grasp and rotate, and further facilitates the wire rope to be removed from the guide cavity and the threaded tube to be removed to clean the inside of the hemostat, thereby improving the convenience of removing and cleaning the hemostat.

[0020] Optionally, a lead screw is fitted on the outside of the wire rope, and the lead screw is located at the end of the threaded tube close to the position limiting block, so that when the lead screw abuts against the threaded tube, the wire rope between the toothed tube and the connecting post is in a slack state.

[0021] By adopting the above technical solution, when adjusting the angle between the connecting posts, the lead screw limits the displacement of the wire rope along the axial direction of the guide cavity, which is advantageous to reduce the probability of the wire rope detaching from the guide cavity and improve the stability of the device operation. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 1 is a schematic diagram of the overall structure of a custom configurable and removable minimally invasive hemostat. [Figure 2] FIG. 2 is an exploded view of the first embodiment. [Figure 3] FIG. [Figure 4] FIG. 1 is a schematic diagram for clearly showing a wire joint. DETAILED DESCRIPTION OF THE INVENTION

[0023] The present invention will be described in detail below with reference to FIGS.

[0024] The present embodiments disclose a custom configurable and removable minimally invasive hemostat.

[0025] 1 and 2, the customizable and removable minimally invasive hemostat includes a distal tip 2, a gripping portion 1, and a flexible transmission member 3 for connecting the distal tip 2 and the gripping portion 1. A user opens and closes the distal tip 2 by clamping or loosening the gripping portion 1. A bendable metal tube 31 is fitted on the outside of the flexible transmission member 3, and the relative positions of the gripping portion 1 and the distal tip 2 can be adjusted by adjusting the metal tube 31, which is advantageous for improving the ease of use of the hemostat.

[0026] 1 and 2, the distal tip includes a fixed jaw 21 and a movable jaw 22, a guide joint 211 is attached within the fixed jaw 21, a flexible transmission member 3 is fixedly attached to the guide joint 211, and a transmission seat 212 is connected between the guide joint 211 and the movable jaw 22. When the guide joint 211 is pulled by the flexible transmission member 3, it moves laterally along the fixed jaw 21, while the movable jaw 22 is pulled by the transmission seat 212 to move toward or away from the fixed jaw 21, which is advantageous in ensuring continuity in the movement process of the fixed jaw 21 and the movable jaw 22.

[0027] 2 and 3, a spring 34 is fitted to the outside of the end of the flexible power transmission member 3 close to the distal tip 2, and in its natural state, the spring 34 moves the guide joint 211 away from the flexible power transmission member 3. When the user loosens the gripping part 1, the guide joint 211 approaches the movable jaw 22, at which point the connecting sheet does not move and the fixed jaw 21 and the movable jaw 22 open to their maximum. When the operator clamps the gripping part 1, the spring 34 returns to its original position, the guide joint 211 approaches the flexible power transmission member 3, and the transmission sheet 212 draws the movable jaw 22 towards the fixed jaw 21 and bonds it to the fixed jaw, which is advantageous for improving the ease of operation of the device.

[0028] 1 and 2, a guide cavity 11 is opened in the gripping part 1, and the guide cavity 11 includes a fixed cavity 111 and an attachment cavity 112. A moving tube 32 is slidably fitted onto the outside of the end of the flexible transmission member 3 remote from the distal tip 2. The moving tube 32 is located inside the attachment cavity 112 and is bonded to the inner wall of the attachment cavity 112, and a position restriction part with an increased diameter is provided on a segment of the moving tube 32 located outside the attachment cavity 112, which is used to prevent the moving tube 32 from completely passing through the attachment cavity 112.

[0029] 2 and 3, the gripping part 1 is provided with a steel ball fastening assembly 122 for fixing the moving tube 32, and the steel ball fastening assembly includes a pivot pin shaft 13 and a steel ball retaining plate 12. The pivot pin shaft 13 passes through the steel ball retaining plate 12 and the gripping part 1 in that order and is rotatably connected to the steel ball retaining plate 12. The steel ball retaining plate 12 has a deep steel ball hole and a shallow steel ball hole that communicate with each other on the side closer to the gripping part 1, and a steel ball 122 is installed in these steel ball holes. An undercut groove 321 that fits the steel ball 122 is formed in the outer circumference of the moving tube 32 along its circumferential direction, and the steel ball 122 is fitted into the undercut groove 321 by the pressure of the steel ball retaining plate 12, thereby fixing it to the moving tube 32. At this time, the position restricting part abuts the gripping part 1, and the moving tube 32 is perfectly positioned along the circumferential direction. When the steel ball retaining plate 12 is rotated, the steel balls 122 slide down from the shallow steel ball holes to the deep steel ball holes under the action of gravity, and the position restriction between the moving tube 32 and the mounting cavity 112 is released, allowing the moving tube 32 to be removed from between the moving tube 32 and the mounting cavity 112. This makes it easy to remove and clean the flexible transmission member 3, and is advantageous in improving the convenience of installing the device.

[0030] 2 and 3, a ball plunger 123 and a positioning pin 124 are provided at the end of the gripping part 1 close to the steel ball retaining plate 12, and the steel ball retaining plate 12 is provided with a first positioning hole for the ball plunger 123 and a second positioning hole for the positioning pin 124. When the steel ball retaining plate 12 is rotated, the positioning pin 124 is located within the first positioning hole and slides along the first positioning hole, aligning the ball screw 123 with the second positioning hole, which is advantageous for improving the stability of rotation of the steel ball retaining plate 12 and the accuracy with which the ball screw 123 is inserted into the second positioning hole.

[0031] 2, the flexible transmission member 3 is coaxially connected to a position limiting ring 33 on the side of the mounting cavity 112 remote from the distal tip 2. When the distal tip 2 is in an open state, the position limiting ring 33 abuts against the end of the moving tube 32 remote from the distal tip 2. When the moving tube 32 is in a locked state, the position limiting ring 33 prevents the flexible transmission member 3 from coming off the mounting cavity 112, which is advantageous in improving the stability of the device operation.

[0032] Referring to Figures 1 and 3, a wire rope 4 is provided between the gripping portion 1 and the tip 2, a connecting pole is fixed to the end of the wire rope 4 close to the tip 2, and the connecting pole is fixed to the tip 2, and a toothed connecting member 46 is provided to the other end of the wire rope 4, and the toothed connecting member 46 is slidably fitted onto the outside of the wire rope 4, and the toothed connecting member 46 supports and positions the wire rope 4 in combination with the connecting pole.

[0033] 2 and 3, the toothed coupling member 46 includes a toothed tube 461 and a threaded tube 462, and the threaded tube 462 is screwed onto the inner wall of the fixed cavity 111. The wire rope 4 passes through the toothed tube 461 and the threaded tube 462 in order to enter the fixed cavity 111. The toothed tube 461 makes it easy for the user to grasp and rotate, and also makes it easy to remove the threaded tube 462 from the fixed cavity 111, thereby allowing the wire rope 4 to be transported out of the fixed cavity 111 and facilitating removal and cleaning of the device.

[0034] 2 and 3, a plurality of connecting blocks 41 are provided on the wire rope 4, and all of the connecting blocks 41 are located between the connecting posts and the toothed tubes 461. A ball stud 411 is provided at one end of each connecting block 41 along the length of the wire rope 4, and a circular arc surface 412 that fits the ball stud 411 is provided at the other end. The ball stud 411 of one connecting block is located within the circular arc surface 412 of the adjacent connecting block and is attached to the inner wall of the circular arc surface 412. Each connecting block 41 has movable cavities 413 opened along the length of the wire rope 4, and the wire rope 4 passes through all of the movable cavities 413 in order. The connecting posts and toothed connecting members 46 combine to position the connecting blocks 41 along the axial direction.

[0035] 2 and 3, the diameter of the movable cavity 413 gradually increases from the middle to both ends, and the middle portion of the movable cavity 413 is adapted to the outer diameter of the wire rope 4, making it easy to accommodate and position the wire rope 4, providing a movable space for the wire rope 4 to deflect along the radial direction, and further increasing the adjustable angle between the wire rope 4 and the connecting block 41, ultimately increasing the angle adjustment range between the gripping portion 1 and the tip 2, which is advantageous to improving the applicability of the device.

[0036] 3 and 4, a wire joint 42 is fixedly fitted to the outside of the wire rope 4 on the side away from the connecting post. A position limiting block 43 is coaxially fixed to the end of the wire joint 42 close to the tip 2. A lock pin 1111 is removably connected to the inner wall of the fixing cavity 111 along the axial direction. The wire joint 42 has a polygonal cross section, and a collar 45 is fitted to the outside, with the inner wall of the collar 45 pasted to the outer wall of the wire joint 42. A locking groove 451 that fits the locking pin 1111 is opened along the axial direction on the outer surface of the collar 45, and the locking pin 1111 is positioned within the locking groove 451 and slidably connected to the inner wall of the locking groove 451. The lock pin 1111 limits the circumferential rotation of the collar 45 by the locking groove 451, thereby allowing the collar 45 to limit the rotation of the wire joint 42, reducing the probability of the wire rope 4 deflecting and further improving the stability of the operation of the wire rope 4.

[0037] 2 and 3, the grip part 1 is provided with a locking part 5 for fastening the wire rope 4, and the locking part 5 includes a rotating handle 51, a connecting body 52, and an engaging seat 53. The connecting body 52 is provided on the outside of the grip part 1 and communicates with the fixing cavity 111, the rotating handle 51 is fitted on the outside of the connecting body 52, and a threaded rod 514 is fixedly provided within the rotating handle 51, and the threaded rod 514 is inserted into the connecting body 52 and screwed to the connecting body 52. ​​The engaging seat 53 is located between the threaded rod 514 and the grip part 1 and is rotatably connected to the threaded rod 514. The connecting body 52 is provided perpendicular to the wire joint 42, and further, the rotating handle 51 is close to the user's hand, making it easy for the user to rotate and adjust.

[0038] 2 and 3, the end of the engaging seat 53 close to the rotating handle 51 is provided with an annular groove, and a cylindrical pin is provided in the annular groove. The width of the annular groove matches the outer diameter of the cylindrical pin, and the cylindrical pin passes through the threaded rod 514 and is attached to the annular groove, so that the threaded rod 514 supports the engaging seat 53.

[0039] 2 and 3, the locking seat 53 has a radial groove in which a second positioning pin 532 is provided, protruding from the outer circumference of the locking seat 53. The connecting body 52 has an axial second positioning groove 2522 that fits the second positioning pin 532. The second positioning groove 2522 guides and positions the second positioning pin 2532 in the vertical direction, and further positions the locking seat 53 when the threaded post rotates, so that the locking seat 53 can only move axially along with the threaded post, which is advantageous to improving the stability of the movement of the locking seat 53.

[0040] 2 and 3, an escape groove is provided at the lower end of engagement seat 53 to allow wire rope 4 to escape, and a first inclined surface 531 is provided on the side of the lower end of engagement seat 53 that approaches position restriction block 43, and due to the action of second position restriction pin 532, first inclined surface 531 always faces position restriction block 43. First inclined surface 531 is inclined in the direction from threaded rod 514 to front tip 2, and second inclined surface 431 corresponding to first inclined surface 531 is provided on the side of position restriction 43 that approaches front tip 2, and second inclined surface 431 is inclined in the direction from gripping portion 1 to front tip 2.

[0041] 2 and 3, by rotating the rotary handle 51, the threaded rod 514 is moved along the length of the connecting body 52, and at this time, the relief groove is always aligned with the wire rope 4, and the engaging seat 53 escapes the wire rope 4 through the relief groove, which further expands the movable range of the engaging seat 53, which is advantageous to reduce the probability that the engaging seat 53 will come into contact with the wire rope 4 and affect the operation of the wire rope 4, and improves the stability of the operation of the wire rope 4.

[0042] Referring to Figures 2 and 3, when the first inclined surface 531 contacts the second inclined surface 431, the engaging seat 53 applies thrust to the position control 43 via the first inclined surface 531, causing the wire joint 42 to tighten the wire rope 4, and the connecting block 41 is firmly tensioned against each other by the action of the wire rope 4, thereby realizing a fixed angle between the tip tip 2 and the gripping portion 1, which is advantageous in improving the convenience of use of the device.

[0043] 3 and 4, the lead screw 44 is fitted on the outside of the wire rope 4 between the threaded tube 462 and the position restricting block 43. When the lead screw 44 abuts the threaded tube 462, the wire rope 4 between the toothed tube 461 and the connecting post is in a slack state, making it easy to adjust the relative angle between the connecting blocks 41 to suit the work demands. The lead screw 44 also prevents the wire rope 4 from completely detaching from the fixing cavity 111, which is advantageous in improving the operational stability of the wire rope 4. The position of the lead screw 44 along the length of the wire rope 4 is adjustable. If the wire rope 4 deforms during long-term use, adjusting the position of the lead screw 44 can maintain the slack of the wire rope 4 when the connecting block 41 is free, which is advantageous in extending the service life of the wire rope 4.

[0044] 2 and 3, the rotating handle 51 includes a threaded bushing 513 and a rotating plate 511. The threaded bushing 513 is fitted to the outside of the connecting body 52 and is attached to the outer wall of the connecting body 52, and the rotating plate 511 is located outside the threaded bushing 513. A threaded rod 514 is fixed to the inner wall of the threaded bushing 513, and a first position-limiting pin 512 is provided between the rotating plate 511 and the threaded bushing 513. An annular groove 521 that fits into the first position-limiting pin 512 is formed on the outer surface of the connecting body 52. The first position control pin 512 passes through the rotating plate 511 and the threaded bushing 513 and is inserted into the annular groove 521. The annular groove 521 limits the circumferential displacement of the position control pin and provides a movable space for the threaded rod 514 to move vertically. The threaded bushing 513 and the connecting body 52 are detachably connected, which is convenient for cleaning the hemostat after removal.

[0045] The principle of the customizable and removable minimally invasive hemostat of the present embodiment is as follows: The ball stud 411 fits into the arcuate surface 412, creating a radial adjustment space between adjacent connecting blocks 41. During the adjustment process, the wire rope 4 deforms synchronously with the rotation of the connecting blocks 41. After adjusting the connecting blocks 41 to the desired angle, the operator rotates the rotating handle 51, causing the threaded rod 514 to press downward against the locking seat 53. This in turn pushes the positioning block 43, moving the wire joint 42 away from the distal tip 2 and further tightening the wire rope 4. At this time, the connecting blocks 41 are tightly tensioned against each other, further fixing the relative angle between the connecting blocks 41 and ultimately fixing the angle of the distal tip 2 relative to the gripping portion 1, which is beneficial to improving the stability of the device during use. Rotating the toothed tube 461 disengages the threaded tube 462 from the fixing cavity 111, thereby realizing a detachable connection between the wire rope 4 and the gripping part 1. Rotating the steel ball retaining plate 12 allows the flexible transmission member 3 and the gripping part 1 to be removed and assembled, which is advantageous in improving the convenience of removing the device.

[0046] The above are all preferred embodiments of the present application, and do not limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application. [Explanation of symbols]

[0047] 1...gripping portion, 11...guide cavity, 111...fixed cavity, 1111...lock pin, 112...mounting cavity, 12...steel ball retaining plate, 122...steel ball, 123, ball plunger, 124...positioning shaft pin, 13...rotating pin shaft, 2...tip, 21...fixed jaw, 211, guide joint, 212...transmission sheet, 22...movable jaw, 3...flexible transmission member, 31...metal tube, 32...moving tube, 321...undercut groove, 33...position limiting ring, 34...spring, 4...wire rope, 41...connecting block, 411...ball Stud, 412...arc surface, 413...movable cavity, 42...wire joint, 43...position control block, 431...second inclined surface, 44...lead screw, 45...collar, 451...engaging groove, 46...toothed connecting member, 461...toothed tube, 462...threaded tube, 5...lock portion, 51...rotating handle, 511...rotating plate, 512...first position control pin, 513, threaded bushing, 514...threaded rod, 52...connecting body, 521...annular groove, 522...second position control groove, 53...engaging seat, 531...first inclined surface, 532...second position control pin.

Claims

1. A customizable and removable minimally invasive hemostatic forceps includes a gripping portion (1), a distal tip (2), and a flexible transmission member (3) connected between the gripping portion (1) and the distal tip (2), wherein the gripping portion (1) controls the opening and closing of the distal tip (2) through the flexible transmission member (3), and the flexible transmission member (3) is bendable along a radial direction, and further includes a wire rope (4) located between the distal tip (2) and the gripping portion (1), and the distal tip of the wire rope (4) is bent. A connecting post is provided at the end of the grip portion (1) close to the tip (2), and the connecting post is connected to the tip (2). A toothed connecting member (46) is provided at the other end. The wire rope (4) passes through the toothed connecting member (46) along its length and is slidably connected to the toothed connecting member (46). The toothed connecting member (46) is connected to the end of the grip portion (1) close to the tip (2). A plurality of connecting blocks (41) are provided between the toothed connecting member (46) and the connecting post, and one end of the connecting block (41) has a ball stud ( The ball stud (411) is fixed to the connecting block (41) and has an arcuate surface (412) at the other end that fits the ball stud (411). The ball stud (411) of any connecting block (41) is located within the arcuate surface (412) of the adjacent connecting block (41) and is bonded to the arcuate surface (412). The connecting block (41) and the ball stud (411) both have movable cavities (413) opened along the length of the wire rope (4). The wire rope (4) is moved through all the movable cavities (41). 3) in order, the diameter of the movable cavity (413) gradually increases from the center toward both ends, thereby providing a movable space for the radial deflection of the wire rope (4) and the connecting block (41), and the minimum diameter of the center of the movable cavity (413) fits the outer diameter of the wire rope (4), and the gripping portion (1) is provided with a locking portion (5) for tightening the wire rope (4).

2. The gripping part (1) has a guide cavity (11), a toothed connecting member (46) is located at the end of the guide cavity (11) close to the tip (2), the wire rope (4) passes through the toothed connecting member (46) and then extends into the guide cavity (11), and a wire joint (42) is fixed to the end of the wire rope (4) remote from the connecting post, the wire joint (42) is located in the guide cavity (11) and slides along the axial direction of the guide cavity (11), and the locking part (5) includes a rotating handle (51), a connecting body (52) and a locking seat (53), the connecting body (52) is connected to the outside of the gripping part (1) and guides 2. The custom configurable and removable minimally invasive hemostat according to claim 1, wherein the rotating handle (51) is provided with a threaded rod (514) communicating with the cavity (11), the threaded rod (514) passing through the connecting body (52) and being screwed to the connecting body (52), the engagement seat (53) being provided on a side of the threaded rod (514) closer to the wire rope (4), the threaded rod (514) driving the engagement seat (53) closer to the wire joint (42) when rotating, and the engagement seat (53) pushing the wire joint (42) away from the distal tip (2) when contacting the wire joint (42).

3. The rotating handle (51) includes a threaded bushing (513) and a rotating plate (511). The threaded bushing (513) is fitted on the outside of the connecting body (52). The threaded rod (514) is coaxial with the inner wall of the threaded bushing (513) and rotates synchronously with the threaded bushing (513). The rotating plate (511) is located outside the threaded bushing (513). a first position limiting pin (512) between the pivot plate (511) and the threaded bushing (513); an annular groove (521) is opened in the circumferential direction on the outer wall of the connecting body (52), the width of the annular groove (521) is greater than the diameter of the first position limiting pin (512), and the first position limiting pin (512) passes through the pivot plate (511) and the threaded bushing (513) in order and is located in the annular groove (521).

4. 3. The custom configurable and removable minimally invasive hemostatic forceps according to claim 2, wherein the connecting body is disposed perpendicular to the wire joint, a position limiting block is coaxially fixed to an end of the wire joint that is closer to the distal tip, a first inclined surface is provided at a lower end of the engagement seat, and a second inclined surface is provided on the position limiting block that corresponds to the first inclined surface, and the first inclined surface applies a thrust force to the position limiting block that moves away from the distal tip when the first inclined surface contacts the second inclined surface.

5. 3. The customizable and removable minimally invasive hemostatic forceps according to claim 2, wherein the lower end of the engagement seat (53) is provided with an undercut groove adapted to fit the wire rope (4), the engagement seat (53) is rotatably connected to the threaded rod (514) around the axis of the threaded rod (514), and a second positioning pin (532) is provided on the outer circumference of the engagement seat (53), a second positioning groove (522) is provided on the coupling body (52) along the length of the threaded rod (514), and the second positioning pin (532) is located in the second positioning groove (522) and slides along the length of the second positioning groove (522).

6. 3. The customizable and removable minimally invasive hemostatic forceps according to claim 2, wherein the wire joint (42) has a polygonal cross section along its radial direction, a collar (45) is fitted onto the outside of the wire joint (42), and the inner wall of the collar (45) is attached to the outer edge of the wire joint (42), the collar (45) has a locking groove (451) along its length, and the gripping portion (1) is provided with a locking pin (1111), which passes through the gripping portion (1) and extends into the locking groove (451), and the locking pin (1111) is attached to the inner wall of the locking groove (451).

7. The custom configurable and removable minimally invasive hemostatic forceps according to claim 2, characterized in that the toothed connecting member (46) includes a toothed tube (461) and a threaded tube (462), the toothed tube (461) is coaxially fixed to the threaded tube (462), the wire rope (4) passes through the toothed tube (461) and the threaded tube (462) in order, and the threaded tube (462) is inserted into the guide cavity (11) and threaded to the inner wall of the guide cavity (11).

8. 5. The customizable and removable minimally invasive hemostatic forceps according to claim 4, characterized in that a lead screw (44) is fitted on the outside of the wire rope (4), the lead screw (44) is located at the end of the threaded tube (462) close to the position limiting block (43), and when the lead screw (44) abuts against the threaded tube (462), the wire rope (4) between the toothed tube (461) and the connecting post is in a slack state.

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