Adjusting handle capable of being bent in four directions

Abstract

The utility model provides an adjusting handle capable of bending in four directions, which comprises a shell and an adjusting mechanism connected with the shell, a catheter sheath can penetrate through the adjusting mechanism to be connected with the shell, the adjusting mechanism comprises four sliding plates, a first adjusting part and a second adjusting part, the four sliding plates are spliced to form a hollow cylinder, each sliding plate is connected with a pull wire of one catheter sheath, and the first adjusting part is connected with the second adjusting part. Outer threads are arranged at the upper ends of two opposite sliding plates, outer threads are arranged at the lower ends of the other two opposite sliding plates, the rotating directions of the outer threads on the two opposite sliding plates are opposite, inner threads matched with the outer threads and opposite in rotating direction are arranged in the two adjusting parts, the first adjusting part is connected to the upper end of the sliding plate assembly, and the second adjusting part is connected to the lower end of the sliding plate assembly. The second adjusting part is connected to the lower end of the sliding plate assembly, so that when each adjusting part rotates, two opposite sliding plates can be driven to do opposite linear motion up and down, the sliding plates moving downwards can pull the corresponding traction lines, the catheter sheath is bent in the direction, and four-direction adjustment is achieved. The two adjusting parts are matched for adjustment, so that the bending shape and the orientation of the catheter sheath are conveniently adjusted, and the catheter sheath does not need to be additionally rotated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to an adjustable handle which can be bent in four directions. Background Art

[0002] The catheter sheath is an important auxiliary guiding device in interventional surgery. The catheter sheath is usually adjusted with an adjustment handle so that the special catheter can enter the diseased area in the body for diagnosis and local treatment. At present, the adjustment handle is mostly one-way or two-way adjustment. The one-way adjustment handle can only bend in one direction, and the two-way adjustment handle can only bend the catheter sheath in two directions on the same plane. During use, both need to cooperate with the rotation of the catheter to adjust the direction of the catheter, which increases the inconvenience of the surgical process.

[0003] In view of this, the applicant filed this application after studying the existing technology. Utility Model Content

[0004] The utility model provides an adjustable handle capable of being bent in four directions, aiming to improve at least one of the above technical problems.

[0005] In order to solve the above technical problems, the utility model provides an adjustable handle that can be bent in four directions, including a handle and an adjustment mechanism connected to the handle, and a catheter sheath can pass through the adjustment mechanism and be connected to the shell.

[0006] The adjustment mechanism includes a slide assembly, a first adjustment part and a second adjustment part. The slide assembly is a hollow cylinder composed of four slides of the same shape spliced ​​in sequence along the circumferential direction. Each slide is connected to a traction line of a catheter sheath. External threads are arranged on the upper ends of two opposite slides, and external threads are arranged on the lower ends of the other two opposite slides. The external threads on the opposite slides have opposite rotation directions.

[0007] The first adjusting part is connected to the upper end of the skateboard assembly, and the second adjusting part is connected to the lower end of the skateboard assembly. The first adjusting part and the second adjusting part are both provided with internal threads with opposite rotation directions, and the internal threads are adapted to the external threads. The adjusting mechanism is configured as follows: when the first adjusting part rotates, it can drive the two skateboards with external threads on the upper ends to move in opposite directions in the axial direction, and when the second adjusting part rotates, it can drive the two skateboards with external threads on the lower ends to move in opposite directions in the axial direction.

[0008] As an improved optimization, the handle includes a sheath and an inner shell placed in the sheath, and each of the bottoms of the skateboards is fixedly connected to a fixing seat, and the inner side wall of the inner shell abuts against the outer side wall of the fixing seat for guiding.

[0009] As an improved optimization, each of the fixing seats is provided with a hole groove for passing the traction line, and a fixing piece for fixing the traction line is provided at the bottom of the fixing seat.

[0010] As a further optimization, the second adjustment part includes a second rotating member, a second rotating fixed member and a second knob connected in sequence along the radial direction of the skateboard assembly. The second rotating member is provided with an internal thread with opposite rotation direction. When the second knob is rotated, it can drive the second rotating fixed member to drive the second rotating member to rotate, thereby driving the skateboard to move.

[0011] As an improved optimization, the lower end of the second rotating fixing member is connected inside the sleeve, and its bottom is close to the upper port of the inner shell. The second rotating fixing member is provided with a second groove and a retaining ring. The inner side wall of the sleeve is provided with a second fixing rod that is adapted to the second groove, and the retaining ring abuts the upper port of the sleeve.

[0012] As an improved optimization, the first adjustment part includes a first rotating part, a first rotating fixed part and a first knob which are connected in sequence along the radial direction of the skateboard assembly. The first rotating part is provided with an internal thread with opposite rotation directions. When the first knob is rotated, it can drive the first rotating fixed part to drive the first rotating part to rotate, thereby driving the skateboard to move.

[0013] As an improved optimization, the lower end of the first rotating fixing member is connected to the inside of the second rotating fixing member, a first slot is provided on the outside of the first rotating fixing member, and a first fixing rod adapted to the first slot is provided on the inner side wall of the second rotating fixing member.

[0014] As an improved optimization, a positioning piece is connected to the top of the first rotating fixing piece, and the positioning piece is snap-connected to the top of the first rotating fixing piece through a buckle, and its lower end extends into the slide board assembly. A pipe is provided inside the positioning piece for allowing the catheter sheath to pass through, and the outer wall abuts against the inner wall of the slide board.

[0015] As an improved optimization, a limit block is provided on the inner wall of the inner shell, and the limit block is used to limit the movement of the sliding plate.

[0016] As an improved optimization, a fixing hole for fixing the catheter sheath is provided at the bottom of the inner shell.

[0017] By adopting the above technical solution, the utility model can achieve the following technical effects:

[0018] The present application discloses an adjustment handle that can be bent in four directions, including an outer shell and an adjustment mechanism connected to the outer shell, the catheter sheath can be connected to the outer shell through the adjustment mechanism, the adjustment mechanism includes four slides spliced ​​to form a hollow cylinder, a first adjustment part and a second adjustment part, each slide is connected to a traction line of the catheter sheath, an external thread is arranged on the upper ends of two opposite slides, and an external thread is arranged on the lower ends of the other two opposite slides, and the external threads on the two opposite slides are rotated in opposite directions, and the interiors of the two adjustment parts are provided with internal threads that are compatible with the external threads and have opposite rotation directions, the first adjustment part is connected to the upper end of the slide assembly, and the second adjustment part is connected to the lower end of the slide assembly, so that when the first adjustment part rotates, it can drive the two slides with external threads on the upper ends to make opposite linear motions up and down, and the slide moving downward can pull its corresponding traction line to make the catheter sheath bend in this direction, and similarly, when the second adjustment part rotates, it can drive the two slides with external threads on the lower ends to make opposite linear motions up and down, and the slide moving downward pulls its corresponding traction line. Each adjustment part can adjust the catheter sheath to bend in two directions. Through the coordinated adjustment of the two adjustment parts, the catheter sheath can be bent in four directions, which is convenient for adjusting the curvature and direction of the catheter sheath without rotating the catheter sheath separately, thereby improving the safety and convenience of the surgical process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of an adjustable handle capable of being bent in four directions according to the utility model;

[0021] Figure 2 It is a cross-sectional view of an adjustable handle capable of being bent in four directions according to the utility model;

[0022] Figure 3 This is a schematic diagram of the exploded structure of an adjustable handle capable of being bent in four directions according to the utility model;

[0023] Figure 4 It is a structural schematic diagram of a slide plate assembly of the utility model with an adjustable handle capable of being bent in four directions;

[0024] Markings in the figure: 1-handle, 11-inner shell; 111-limiting block; 112-fixing hole; 12-sheath; 2-slide plate assembly; 21-first slide plate; 22-second slide plate; 23-third slide plate; 24-fourth slide plate; 25-fixing seat; 251-fixing piece; 252-hole groove; 3-first adjusting part; 31-first rotating part; 32-first rotating fixing part; 321-first slot; 33-first knob; 4-second adjusting part; 41-second rotating part; 42-second rotating fixing part; 421-first slot; 422-circlip; 43-second knob; 6-second fixing rod; 7-first fixing rod; 8-positioning piece; 9-convex tooth. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the implementation mode of the utility model clearer, the technical scheme in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the described implementation mode is a part of the implementation mode of the utility model, not all of the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the implementation mode of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected implementation mode of the utility model. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] Example

[0027] Depend on Figures 1 to 4As shown, an embodiment of the utility model provides an adjustment handle that can be bent in four directions, including a handle 1 and an adjustment mechanism connected to the handle 1, the catheter sheath can pass through the adjustment mechanism and be connected to the handle 1, the adjustment mechanism includes a slide assembly 2, a first adjustment part 3 and a second adjustment part 4, the slide assembly 2 includes four slides spliced ​​into a hollow cylinder in sequence along the circumferential direction, each slide is connected to a traction line of the catheter sheath, for the convenience of explanation, the four slides are divided into a first slide 21, a second slide 22, a third slide 23 and a fourth slide 24, wherein the first slide 21 is opposite to the third slide 23, and the second slide 22 is opposite to the fourth slide 24. The first slide 21 and the third slide 23 are provided with external threads at the upper ends, and the second slide 22 and the fourth slide 24 are provided with external threads at the lower ends. The external threads on the two opposite slides have opposite rotation directions. The inner side walls of the first adjustment part 3 and the second adjustment part 4 are provided with two internal threads of opposite rotation directions. The first adjustment part 3 is connected to the upper end of the slide assembly 2, and its internal thread is adapted to the external threads of the first slide 21 and the third slide 23. The second adjustment part 4 is connected to the lower end of the slide assembly 2, and its internal thread is adapted to the external threads of the second slide 22 and the fourth slide 24. When the first adjustment part 3 is rotated, the first slide 21 and the third slide 23 can move up and down along the axial direction of the slide assembly 2, while the second slide 22 and the fourth slide 24 have no threads on their upper ends and are therefore not affected. The slide that moves downward can pull the traction line connected to it, so that the catheter sheath bends toward the slide. Similarly, when the second adjustment part 4 is rotated, the second slide 22 and the fourth slide 24 can move up and down along the axial direction of the slide assembly 2, and the slide that moves downward can pull the traction line connected to it, so that the catheter sheath bends toward the slide. It should be noted that the catheter sheath used in this application is an existing product, and no further details are given here.

[0028] In this embodiment, through the cooperation of the adjustment part and the slide plate, each adjustment part can adjust the catheter sheath to bend in two directions, so that the handle can bend the catheter sheath in four directions. When in use, the curvature and direction of the catheter sheath can be changed only by rotating and adjusting the two adjustment parts in coordination. There is no need to adjust the direction by rotating the catheter sheath. The adjustment is convenient and efficient, which increases the safety of the operation. The driving structure adopts a spiral structure, and the lead angle is smaller than the equivalent friction angle. Therefore, after the adjustment is completed, it can also be self-locking, which is easy to operate.

[0029] Furthermore, the handle 1 includes a sheath 12 and an inner shell 11, the inner shell 11 is placed in the sheath 12, and an annular groove is provided at the bottom of the inner shell 11, and the sheath 12 and the inner shell 11 are sealed by the cooperation of the bottom annular groove and the sealing ring. The outer surface of the sheath 12 is arranged with a plurality of circular grooves for increasing friction. Each slide plate is fixedly connected to a fixing seat 25 at the bottom, and the fixing seat 25 is placed in the inner shell 11. The outer side wall of the fixing seat 25 abuts against the inner side wall of the inner shell 11, and the inner shell 11 can guide the movement of the slide plate. The bottom of the fixing seat 25 is connected to a fixing member 251 and a through hole 252. After the traction line of the catheter sheath passes through the hole 252, the end is wrapped around the fixing member 251 for fixing.

[0030] See also Figure 2 , Figure 3 and Figure 4 The second adjusting part 4 includes a second rotating member 41, a second rotating fixed member 42 and a second knob 43 which are sequentially connected along the radial direction of the slide assembly 2. The second rotating member 41 is provided with an internal thread which is opposite in rotation direction and matches the external thread of the second slide 22 and the fourth slide 24. The second rotating member 41 is formed by snapping two semi-cylindrical barrels for easy assembly. The second rotating member 41 is connected to the lower end of the slide assembly 1. The second rotating fixed member 42 is sleeved on the second rotating member 1 for fixing the second rotating member 41, and its bottom is close to the upper port of the housing 1. The second knob 43 is fixedly connected to the upper end of the second rotating fixed member 42. Rotating the second knob 43 can rotate the second rotating fixed member 42 and drive the second rotating member 41 to rotate, thereby driving the second slide 22 and the fourth slide 24 to move in the opposite direction in the axial direction of the slide assembly 2 through the threaded structure.

[0031] The lower end of the second rotating fixing member 42 is connected to the sheath 12, and a second clamping groove 421 and a clamping ring 422 are provided on the second rotating fixing member 42. The second fixing rod 6 is fixedly connected to the inner wall of the sheath 12, and the second fixing rod 6 can be clamped in the second clamping groove 421, so that the second rotating fixing member 42 can be rotatably connected to the sheath 12; one side of the clamping ring 422 abuts against the upper port of the sheath 5, and the other side abuts against the second knob 43 for positioning. A convex ring can also be provided on the inner wall of the sheath 12, and the convex ring and the clamping groove are used for connection.

[0032] See also Figure 2 , Figure 3 and Figure 4The first adjusting part 3 includes a first rotating member 31, a first rotating fixed member 32 and a first knob 33 which are sequentially connected along the radial direction of the slide assembly 2. The first rotating member 31 is provided with an internal thread which is opposite in rotation direction and matches the external thread of the first slide 21 and the third slide 23. The first rotating member 31 is formed by buckling two semi-cylindrical barrels, which makes it easy to assemble. The first rotating member 31 is connected to the upper end of the slide assembly 1. The first rotating fixed member 32 is sleeved on the first rotating member 31 to fix the first rotating member 31. The lower end of the first rotating fixed member 32 is connected to the second rotating fixed member 42. The first fixing rod 7 is fixedly connected to the inner side wall of the second rotating fixed member 42. The first rotating fixed member 32 is provided with a first clamping groove 321. The first fixing rod 7 can be clamped in the first clamping groove 321, so that the first rotating fixed member 32 can be rotatably connected to the second rotating fixed member 42 to prevent the first rotating fixed member 32 from being displaced when rotating. A convex ring can also be provided on the inner side wall of the second rotating fixed member 42, and the convex ring and the clamping groove are used for connection. The first knob 33 is fixedly connected to the upper end of the first rotating fixing member 32 and is adjacent to the second knob 43. Rotating the first knob 33 can rotate the first rotating fixing member 32 and then drive the first rotating member 31 to rotate, thereby driving the first slide plate 21 and the third slide plate 23 to perform reverse linear motion in the axial direction through the threaded structure.

[0033] The outer surfaces of the first rotating fixed member 32 and the second rotating fixed member 42 are both provided with a plurality of convex teeth, and the inner walls of the first knob 33 and the second knob 43 are provided with grooves adapted to the convex teeth 9, and the knobs and the rotating fixed members are fixedly connected by the cooperation between the grooves and the convex teeth 9. The outer surfaces of the two knobs are both arranged with a plurality of waist-shaped grooves for increasing friction and preventing slipping during adjustment. The outer walls of the first rotating member 31 and the second rotating member 42 are both provided with convex strips, and the inner walls of the first rotating fixed member 32 and the second rotating fixed member 42 are provided with assembly grooves adapted to the convex strips, and the rotating members and the rotating fixed members are fixedly connected by the cooperation between the convex strips and the assembly grooves.

[0034] Furthermore, a positioning member 8 is connected to the top of the first rotating fixing member 32, and the positioning member 8 is snap-fitted to the top of the first rotating fixing member 32 by a buckle. The lower end of the positioning member 8 extends into the hollow cylinder formed by four slides, and a pipe is provided inside for the catheter sheath to pass through. The outer wall abuts against the inner wall of the slide. The positioning member 8 can prevent the slide from sliding out when it moves upward, and the positioning member 8 cooperates with the fixing seat 25 to support the four slides that make up the hollow cylinder to prevent the slide from collapsing or shifting when the slide moves.

[0035] Furthermore, a limit block 111 is provided on the inner side wall of the inner shell 11 to limit the downward sliding distance of the slide plate.

[0036] Furthermore, a fixing hole 112 for fixing the catheter sheath is provided at the bottom of the housing 11 , and the catheter sheath is inserted through the positioning piece 8 and fixed in the fixing hole 112 .

[0037] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An adjustable handle capable of being bent in four directions, comprising a handle and an adjusting mechanism connected to the handle, wherein a catheter sheath can pass through the adjusting mechanism and be connected to the handle, characterized in that: The adjustment mechanism includes a slide assembly, a first adjustment part and a second adjustment part. The slide assembly is a hollow cylinder composed of four slides of the same shape spliced ​​in sequence along the circumferential direction. Each slide is connected to a traction line of a catheter sheath. External threads are arranged on the upper ends of two opposite slides, and external threads are arranged on the lower ends of the other two opposite slides. The external threads on the opposite slides have opposite rotation directions. The first adjusting part is connected to the upper end of the skateboard assembly, and the second adjusting part is connected to the lower end of the skateboard assembly. The first adjusting part and the second adjusting part are both provided with internal threads with opposite rotation directions, and the internal threads are adapted to the external threads. The adjusting mechanism is configured as follows: when the first adjusting part rotates, it can drive the two skateboards with external threads on the upper ends to move in opposite directions in the axial direction, and when the second adjusting part rotates, it can drive the two skateboards with external threads on the lower ends to move in opposite directions in the axial direction.

2. The four-way adjustable handle according to claim 1, characterized in that The handle includes a protective cover and an inner shell placed in the protective cover. The bottom of each skateboard is fixedly connected to a fixing seat. The inner side wall of the inner shell abuts against the outer side wall of the fixing seat for guiding.

3. The four-way adjustable handle according to claim 2, characterized in that Each of the fixing seats is provided with a hole groove for passing the traction line, and a fixing piece for fixing the traction line is provided at the bottom of the fixing seat.

4. The four-way adjustable handle according to claim 2, characterized in that The second adjusting part includes a second rotating member, a second rotating fixed member and a second knob which are connected in sequence along the radial direction of the skateboard assembly. The second rotating member is provided with an internal thread with opposite rotation direction. When the second knob is rotated, it can drive the second rotating fixed member to drive the second rotating member to rotate, thereby driving the skateboard to move.

5. The four-way adjustable handle according to claim 4, characterized in that The lower end of the second rotating fixing member is connected to the inside of the sleeve, and its bottom is close to the upper port of the inner shell. The second rotating fixing member is provided with a second groove and a retaining ring. The inner side wall of the sleeve is provided with a second fixing rod adapted to the second groove, and the retaining ring abuts the upper port of the sleeve.

6. The four-way adjustable handle according to claim 5, characterized in that The first adjusting part includes a first rotating member, a first rotating fixed member and a first knob which are connected in sequence along the radial direction of the skateboard assembly. The first rotating member is provided with an internal thread with opposite rotation directions. When the first knob is rotated, it can drive the first rotating fixed member to drive the first rotating member to rotate, thereby driving the skateboard to move.

7. The four-way adjustable handle according to claim 6, characterized in that The lower end of the first rotating fixing member is connected to the inside of the second rotating fixing member, a first slot is provided on the outside of the first rotating fixing member, and a first fixing rod adapted to the first slot is provided on the inner wall of the second rotating fixing member.

8. The four-way adjustable handle according to claim 6, characterized in that A positioning member is connected to the top of the first rotating fixing member, and the positioning member is snap-connected to the top of the first rotating fixing member through a buckle, and its lower end extends into the slide assembly. A pipe is provided inside the positioning member for allowing the catheter sheath to pass through, and the outer wall abuts against the inner wall of the slide.

9. The four-way adjustable handle according to claim 2, characterized in that A limit block is provided on the inner wall of the inner shell, and the limit block is used to limit the movement of the sliding plate.

10. The four-way adjustable handle according to claim 2, characterized in that The bottom of the inner shell is provided with a fixing hole for fixing the catheter sheath.

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