Bending handle and bending catheter device

Abstract

The invention relates to the technical field of medical instruments, and discloses a bending adjusting handle and a bending adjusting catheter device, and the bending adjusting handle comprises a shell and a bending adjusting assembly. The guide pipe installation position is arranged in an inner cavity of the shell and extends in the first direction. The bending adjusting assembly comprises a winding drum rotationally arranged in the shell, one end of the winding drum is provided with a first fixing position, the other end of the winding drum is provided with a second fixing position, the rotating axis of the winding drum extends in the second direction, the first direction and the second direction are perpendicular in different planes, and the winding directions of the traction wires on the first fixing position and the second fixing position are opposite. The traction force and the traction stroke can be more accurately controlled by winding the traction wire through the winding drum, the traction stroke is not limited by the length size of the handle, the handle can be sufficiently made small, and the structural size is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a bending adjustment handle and a bending adjustment catheter device. Background Art

[0002] Minimally invasive interventional surgery is a novel medical surgical method that uses special catheters, guide wires and other instruments to introduce energy, drugs or instruments into the human body through natural or incision positions to diagnose or locally treat lesions in the human body. It has the advantages of less trauma, simplicity and convenience, high safety, obvious treatment effect, few accompanying complications and short hospitalization time.

[0003] In the clinical application stage of medical practice, interventional catheter-type medical devices, especially interventional catheter devices with controllable bending functions, have shown extremely high application frequency and importance. They are widely and effectively adopted in a variety of medical scenarios. The distal end of the catheter on the current market is generally bent by traction of the traction wire. However, the conventional traction wire structure often cannot accurately control the traction force, resulting in the difficulty of accurately bending the distal end of the catheter to the required angle. In addition, due to the limited traction stroke of the traction wire traction structure, the bending angle adjustment range of the catheter is relatively limited. These factors increase the difficulty of the operation to a certain extent and even increase the risk of the operation. Summary of the invention

[0004] In view of this, the present invention provides a bending adjustment handle and a bending adjustment catheter device to solve the problem that the conventional traction structure is inconvenient to operate and the catheter bending adjustment range is limited due to the structure itself.

[0005] In a first aspect, the present invention provides a bending handle, comprising:

[0006] case;

[0007] A catheter installation position, disposed in the inner cavity of the housing and extending along a first direction;

[0008] The bending adjustment component includes a reel rotatably arranged in the shell, one end of the reel is provided with a first fixed position, and the other end is provided with a second fixed position, the rotation axis of the reel extends along a second direction, the first direction and the second direction are skewed and perpendicular, and the winding directions of the traction wire at the first fixed position and the second fixed position are opposite.

[0009] Optionally, the bending adjustment assembly includes a driving wheel and a driven wheel rotatably arranged inside the shell, the driving wheel is connected to the driven wheel through a transmission assembly, the driven wheel is coaxially arranged with the reel and is used to drive the reel to rotate synchronously, and the shell is provided with a slot that allows the driving wheel to partially extend.

[0010] Optionally, the transmission assembly includes:

[0011] A transmission sleeve is rotatably disposed at the catheter installation position and extends along a first direction, the outer wall of the transmission sleeve is provided with a first thread, the driven wheel is provided with a first gear tooth, and the first thread and the first gear tooth are meshed for transmission;

[0012] A first transmission wheel, coaxially connected to the driving wheel;

[0013] The second transmission wheel is coaxially arranged with the transmission sleeve and is transmission-connected with the first transmission wheel.

[0014] Optionally, a first baffle wall and a second baffle wall are provided in the shell, and the first baffle wall and the second baffle wall are respectively provided with a first through hole and a second through hole of the same size and corresponding positions, and the transmission conduit is rotatably arranged on the first through hole and the second through hole, and two ends of the transmission conduit extend out of the first through hole and the second through hole respectively, and the opposite two ends are respectively provided with limit fittings with the first baffle wall and the second baffle wall.

[0015] Optionally, a third baffle wall is arranged between the first baffle wall and the second baffle wall, the third baffle wall is provided with a third through hole, the transmission sleeve passes through the third through hole, the third baffle wall and the second baffle wall are respectively provided with a fourth through hole and a fifth through hole of the same size and corresponding positions, the driving wheel and the first driving wheel are rotatably arranged on the fourth through hole and the fifth through hole through a rotating shaft; the first transmission wheel and the second transmission wheel are limitedly matched with the second baffle wall and the third baffle wall.

[0016] Optionally, a rotation-stopping structure is provided on the housing, and the rotation-stopping structure comprises:

[0017] A first ratchet wheel and a second ratchet wheel are coaxially arranged with the transmission sleeve and cannot be rotated, and the teeth of the first ratchet wheel and the second ratchet wheel face in opposite directions;

[0018] A first pawl and a second pawl are respectively arranged on the housing through a first slide seat and a second slide seat;

[0019] The pressing assembly includes a pressing key and a pressing rod, the middle part of the pressing rod is hinged on the shell, one end of the pressing rod is connected to the first slide seat, and the other end is connected to the second slide seat, and the pressing key is used to drive the pressing rod to swing in a clockwise or counterclockwise direction.

[0020] Optionally, the pressure rod has a slot, the bottom of the slot is an arc surface, the pressure key is a boat-shaped button and is hinged on the shell, the pressure key has a guide cylinder arranged toward the pressure rod, a pressure column is arranged in the guide cylinder through an elastic member, and the end of the pressure column extends out of the guide cylinder and extends to contact the slot.

[0021] In a second aspect, the present invention provides a bending-adjusting catheter device, comprising the above-mentioned bending-adjusting handle, and also comprising a catheter, wherein the catheter has a first traction wire channel and a second traction wire channel relatively arranged, the proximal end of the catheter extends into the catheter mounting position, the first fixed position of the reel is connected to the proximal end of the first traction wire, the first traction wire extends into the first traction wire channel, the second fixed position is connected to the proximal end of the second traction wire, and the second traction wire extends into the second traction wire channel.

[0022] Optionally, a fixing sleeve is provided at the distal end of the handle, a Luer connector is provided at the proximal end of the handle, and the catheter passes through the fixing sleeve, enters the inner cavity of the shell, and is connected with the Luer connector.

[0023] Optionally, the catheter includes an inner layer, a reinforcement layer and an outer layer which are sequentially arranged from inside to outside, and the first traction wire channel and the second traction wire channel are arranged between the reinforcement layer and the outer layer.

[0024] Optionally, the catheter includes a bending adjustment section arranged at the distal end, the first traction wire channel and the second traction wire channel extend to opposite sides of the bending adjustment section respectively, and a tube body reinforcement section is arranged at the proximal end of the bending adjustment section.

[0025] Beneficial effects:

[0026] The bending adjustment handle provided by the present invention comprises: a shell and a bending adjustment assembly. The catheter mounting position is arranged in the inner cavity of the shell and extends along a first direction. The bending adjustment assembly comprises a reel rotatably arranged in the shell, one end of the reel is provided with a first fixed position, and the other end is provided with a second fixed position, the rotation axis of the reel extends along the second direction, the first direction and the second direction are skewed and perpendicular, and the winding directions of the traction wire at the first fixed position and the second fixed position are opposite.

[0027] The shell may include a holding portion and an operating portion. Medical staff can hold the holding portion and operate the operating portion to rotate the reel of the bending adjustment assembly. Since the first fixed position and the second fixed position wind the traction wire in a clockwise and counterclockwise manner respectively, when the reel rotates, the first fixed position can tighten the traction wire and the second fixed position can loosen the traction wire, or the first fixed position can loosen the traction wire and the second fixed position can tighten the traction wire, so that the two traction wires are in a loose and tight state, thereby controlling the distal end of the catheter to bend in a first direction or a second direction opposite to the first direction.

[0028] Conventional traction wire traction structures usually provide a slider that moves axially along the handle to pull the traction wire. It is not easy to control the tension and relaxation force of the traction wire, and the traction stroke is limited by the length of the handle. In comparison, winding the traction wire by a reel is more conducive to accurately controlling the traction force and traction stroke, and the traction stroke is not limited by the length of the handle, so the handle can be made substantially smaller and the structure size can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a cross-sectional structural view of a bending adjustment handle according to an embodiment of the present application;

[0031] Figure 2 for Figure 1 Schematic diagram of the enlarged view at A in the middle;

[0032] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the center adjustment handle at another angle;

[0033] Figure 4 for Figure 3 A partial enlarged schematic diagram of

[0034] Figure 5 A schematic diagram of the structure of a housing according to an embodiment of the present application;

[0035] Figure 6 This is a schematic diagram of the structure explosion of the bending handle of an embodiment of the present application;

[0036] Figure 7 This is a schematic structural diagram of a first slide seat and a first pawl according to an embodiment of the present application;

[0037] Figure 8 This is a schematic diagram of the structure of the pressing key and the pressing rod of an embodiment of the present application;

[0038] Fig. 9 is a schematic diagram of the cross-sectional structure of a catheter according to an embodiment of the present application;

[0039] Fig.10 This is a schematic structural diagram of the inner layer of the catheter according to an embodiment of the present application.

[0040] Description of reference numerals:

[0041] 1. Shell; 11. First shell; 12. Second shell; 101. Grip; 102. Operation; 103. Anti-slip strip; 104. Notch; 105. Slide; 106. Stop plate; 107. Mounting hole; 108. Clamping hole; 109. Clamping column; 111. Slide; 112. Second pin; 113. Third pin; 114. Mounting slot; 115. Fixing slot; 116. Shaft column ; 121, fixed sleeve; 122, joint; 2, reel; 201, driving wheel; 202, driven wheel; 203, transmission sleeve; 204, first transmission wheel; 205, second transmission wheel; 206, first baffle wall; 207, second baffle wall; 208, third baffle wall; 211, rotating shaft; 212, first through hole; 213, second through hole; 214, third through hole; 215, fourth through hole; 216 , fifth through hole; 301, first ratchet; 302, second ratchet; 303, first pawl; 304, second pawl; 305, first slide; 306, second slide; 307, pressing key; 308, pressing rod; 309, pressing column; 311, first convex edge; 312, mounting cavity; 313, fixing column; 314, tension spring; 315, latch; 316, first pin shaft; 317, bottom plate; 3 18. Mounting hole; 321. First pin hole; 322. Second pin hole; 323. Guide cylinder; 324. Elastic member; 325. Card slot; 41. First traction wire, 42. Second traction wire; 5. Conduit; 501. Bending section; 502. Tube reinforcement section; 503. Development ring; 511. First traction wire channel; 512. Second traction wire channel; 52. Inner layer; 53. Reinforcement layer; 54. Outer layer. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a bending adjustment handle is provided in an embodiment of the present application, including: a shell 1 and a bending adjustment component.

[0044] The catheter installation position is arranged in the inner cavity of the shell 1 and extends along the first direction. The catheter installation position is used to limit the extension direction of the catheter. The first direction can be the axial direction of the shell. The catheter installation position can pass through the axial ends of the shell 1.

[0045] The bending adjustment component includes a reel 2 rotatably arranged in a shell 1, one end of the reel 2 is provided with a first fixed position, and the other end is provided with a second fixed position. The rotation axis of the reel 2 extends along the second direction, and the first direction and the second direction are skewed and perpendicular. In this arrangement, when the reel 2 rotates, the first fixed position and the second fixed position can smoothly drive the traction wire to move along the extension direction of the catheter.

[0046] The winding directions of the traction wires at the first fixed position and the second fixed position are opposite. For example, the catheter can be provided with two traction wires opposite to each other. One of the traction wires is wound in a clockwise direction at the first fixed position, and the other traction wire is wound in a counterclockwise direction at the second fixed position. Figure 2 The end shown is defined as a first fixed position, and the first traction wire 41 can be wound in the first fixed position in a clockwise direction. Figure 4 The end shown is defined as the second fixed position, and the second traction wire 42 can be wound in the second fixed position in the counterclockwise direction. Since the first traction wire 41 and the second traction wire 42 are wound in opposite directions at the two ends of the reel 2, Figure 2 Taking the angle shown as an example, when the reel 2 rotates in the clockwise direction, the first fixed position winds the first traction wire 41, and the second fixed position relaxes the second traction wire 42. When the reel 2 rotates in the counterclockwise direction, the first fixed position relaxes the first traction wire 41, and the second fixed position winds the second traction wire 42. With this arrangement, when the reel 2 rotates along any angle, one of the first traction wire 41 and the second traction wire 42 can be controlled to be tightened and the other one can be relaxed at the same time, thereby achieving one loosening and one tightening, thereby controlling the end of the catheter to bend to the first angle or the second angle.

[0047] The housing 1 may include a gripping portion 101 and an operating portion 102. The medical staff may hold the gripping portion 101 and operate the reel 2 of the bending adjustment assembly to rotate through the operating portion 102. A plurality of anti-slip strips 103 may be provided on the gripping portion 101 to facilitate one-handed operation by the medical staff. Since the first fixed position and the second fixed position wind the traction wire in opposite directions, when the reel rotates, the first fixed position may tighten the traction wire and the second fixed position may loosen the traction wire, or the first fixed position may loosen the traction wire and the second fixed position may tighten the traction wire, so that the two traction wires are in a state of one loose and one tight, thereby controlling the distal end of the catheter to bend to a first angle or a second angle opposite to the first angle.

[0048] Conventional traction wire traction structures usually provide a slider that moves axially along the handle to pull the traction wire. It is not easy to control the tension and relaxation force of the traction wire, and the traction stroke is limited by the length of the handle. In comparison, winding the traction wire by a reel is more conducive to accurately controlling the traction force and traction stroke, and the traction stroke is not limited by the length of the handle, so the handle can be made substantially smaller and the structure size can be reduced.

[0049] It should be noted that the winding directions of the traction wires on the two ends of the reel 2 can be determined according to actual conditions, and the winding directions of the two traction wires can be opposite, thereby ensuring that the two ends of the reel 2 can tighten and relax the two traction wires at the same time when the reel 2 rotates.

[0050] like Figure 1 and Figure 2 As shown, in this embodiment, the bending adjustment assembly includes a driving wheel 201 and a driven wheel 202 that are rotatably arranged inside the housing 1. The driving wheel 201 is connected to the driven wheel 202 through a transmission assembly. The driven wheel 202 is coaxially arranged with the reel 2 to drive the reel 2 to rotate synchronously. For example, the driven wheel 202 has an axial hole, and the reel 2 can pass through the axial hole of the driven wheel 202. There is a limit clamp between the outer wall of the reel 2 and the axial hole of the driven wheel 202, so that the driven wheel 202 can drive the reel 2 to rotate synchronously. When the medical staff rotates the driving wheel 201, the driving wheel 201 drives the driven wheel 202 to rotate, and the reel 2 rotates synchronously. The driving wheel 201 can rotate in a clockwise direction or a counterclockwise direction, and the reel 2 can realize bidirectional rotation under the drive of the driven wheel 202, so as to simultaneously control one of the first traction wire 41 and the second traction wire 42 to be tightened and the other to be loosened, so as to realize one loose and one tight.

[0051] like Figure 5 As shown, the housing 1 is provided with a slot 104 that allows the driving wheel 201 to partially extend out. The driving wheel 201 partially extends out of the slot 104, which is convenient for medical staff to operate.

[0052] like Figure 1 and Figure 2 As shown, in this embodiment, the transmission assembly includes: a transmission sleeve 203 , a first transmission wheel 204 and a second transmission wheel 205 .

[0053] The transmission sleeve 203 is rotatably arranged at the catheter installation position and extends along the first direction. The outer wall of the transmission sleeve 203 is provided with a first thread, and the driven wheel is provided with a first gear tooth. The first thread and the first gear tooth are meshed for transmission. The first transmission wheel 204 is coaxially connected to the driving wheel 201 for transmission. The rotation of the driving wheel 201 can drive the first transmission wheel 204 to rotate synchronously. The second transmission wheel 205 is coaxially arranged with the transmission sleeve 203 and is connected to the first transmission wheel 204 for transmission. The second transmission wheel 205 can be sleeved on the transmission sleeve 203 through an axial hole. There is a limit clamp between the axial holes of the transmission sleeve 203 and the second transmission wheel 205, so that the second transmission wheel 205 can drive the transmission sleeve 203 to rotate synchronously. The first transmission wheel 204 and the second transmission wheel 205 can be driven by meshing. When the driving wheel 201 rotates, the first transmission wheel 204, the second transmission wheel 205, the transmission sleeve 203, the driven wheel 202 and the reel 2 rotate synchronously, and the reel 2 can be controlled to rotate in both directions by controlling the driving wheel 201 to rotate in a clockwise direction or a counterclockwise direction.

[0054] The transmission sleeve 203 can allow the catheter to pass through, and the driving wheel 201, the driven wheel 202 and the first transmission wheel 204 can be arranged on the first side of the transmission sleeve 203. The driving wheel 201 is located between the driven wheel 202 and the first transmission wheel 204, so that the structure becomes compact, and the position coordination of the above-mentioned transmission components can allow the driving wheel 201 to extend from the operating part 102, which can facilitate operation by medical staff.

[0055] In this embodiment, the driving wheel 201 and the first transmission wheel 204 can be set on the rotating shaft 211, and the rotating shaft 211 is rotatably set on the shell 1. Limiting clamps are set between the driving wheel 201, the first transmission wheel 204 and the rotating shaft 211, so that the driving wheel 201, the first transmission wheel 204 and the rotating shaft 211 can rotate synchronously.

[0056] like Figure 5 and Figure 6 As shown, in this embodiment, a mounting hole 107 is provided on the shell 1, and the reel 2 and the driven wheel 202 are rotatably mounted on the mounting hole 107 through the shaft column 116. A flat key is provided on the reel 2, and a recess is provided in the shaft hole of the driven wheel 202. The reel 2 is limited by the flat key and the recess of the driven wheel 202, thereby ensuring that the two rotate synchronously around the shaft column 116.

[0057] like Figure 2 and Figure 5 As shown, in this embodiment, a first retaining wall 206 and a second retaining wall 207 are provided in the shell 1, and the first retaining wall 206 and the second retaining wall 207 are respectively provided with a first through hole 212 and a second through hole 213 of the same size and corresponding positions, and the transmission sleeve 203 is rotatably arranged on the first through hole 212 and the second through hole 213, and the two ends of the transmission sleeve 203 extend out of the first through hole 212 and the second through hole 213 respectively, and the opposite ends are respectively provided with limiting cooperation with the first retaining wall 206 and the second retaining wall 207, for example, the opposite ends of the transmission sleeve 203 are provided with flanges, and the two flanges are respectively in contact and slide with the first retaining wall 206 and the second retaining wall 207, so that the transmission sleeve 203 can only rotate on the first through hole 212 and the second through hole 213 and cannot move along the axial direction of the shell 1, thereby ensuring the stability of the cooperation between the transmission sleeve 203 and the driven wheel 202.

[0058] like Figure 2 and Figure 5 As shown, in this embodiment, a third blocking wall 208 is provided between the first blocking wall 206 and the second blocking wall 207 , and the third blocking wall 208 is provided with a third through hole 214 , and the transmission sleeve 203 passes through the third through hole 214 .

[0059] The third retaining wall 208 and the second retaining wall 207 are respectively provided with a fourth through hole 215 and a fifth through hole 216 of the same size and corresponding positions, the fourth through hole 215 and the fifth through hole 216 are located on the first side of the first through hole 212, the second through hole 213 and the third through hole 214 mentioned above, the driving wheel 201 and the first transmission wheel 204 are rotatably arranged on the fourth through hole 215 and the fifth through hole 216 through the rotating shaft 211, the first transmission wheel 204 and the second transmission wheel 205 are limitedly matched with the second retaining wall 207 and the third retaining wall 208, a limiting groove is formed between the second retaining wall 207 and the third retaining wall 208, the first transmission wheel 204 and the second transmission wheel 205 are both located in the limiting groove, the limiting groove can prevent the first transmission wheel 204 and the second transmission wheel 205 from being displaced in the axial direction of the housing 1, and ensure the stability of the matching of the first transmission wheel 204 and the second transmission wheel 205.

[0060] Flanges may be provided at opposite ends of the rotating shaft 211 , and the two flanges are in contact with and cooperate with the driving wheel 201 and the second retaining wall 207 respectively, so as to prevent the rotating shaft 211 and the driving wheel 201 from being displaced in the axial direction of the housing 1 .

[0061] like Figure 6 As shown, in this embodiment, the shell 1 can include a first shell 11 and a second shell 12 that are snapped together, and the above-mentioned first baffle wall 206, second baffle wall 207 and third baffle wall 208 are all formed by docking two parts, and the first through hole 212, second through hole 213, third through hole 214, fourth through hole 215 and fifth through hole 216 are all formed by docking corresponding semicircular grooves, thereby facilitating the installation and maintenance of internal components of the shell 1.

[0062] like Figure 5 As shown, in this embodiment, the first housing 11 and the second housing 12 are plugged together through the clamping hole 108 and the clamping column 109 to complete the installation. Of course, the first housing 11 and the second housing can also be installed through screws and threaded holes.

[0063] like Figure 2 and Figure 4 As shown, in this embodiment, a rotation-stopping structure is provided on the housing 1, and the rotation-stopping structure includes: a first ratchet 301, a second ratchet 302, a first pawl 303, a second pawl 304 and a pressing assembly.

[0064] The first ratchet 301 and the second ratchet 302 are coaxially and non-rotatably arranged with the transmission sleeve 203, and the teeth of the first ratchet 301 and the second ratchet 302 face opposite directions. For example, the first ratchet 301 and the second ratchet 302 can be respectively bonded, welded or integrally formed at different positions in the axial direction of the transmission sleeve 203.

[0065] The first pawl 303 and the second pawl 304 are respectively arranged on the shell 1 through the first slide 305 and the second slide 306. The first pawl 303 faces the first ratchet 301, and the second pawl 304 faces the second ratchet 302. The pressing assembly includes a pressing key 307 and a pressing rod 308. The middle part of the pressing rod 308 is hinged on the shell 1. One end of the pressing rod 308 is connected to the first slide 305, and the other end is connected to the second slide 306. The pressing key 307 is used to drive the pressing rod 308 to swing in a clockwise or counterclockwise direction.

[0066] For example Figure 2 The setting angle of the pressure rod 308 is shown as follows. When the pressure key 307 presses the pressure rod 308 to swing counterclockwise, the first slide 305 drives the first pawl 303 to move towards the first ratchet 301 until it contacts and cooperates with the gear teeth of the first ratchet 301, and the second slide 306 drives the second pawl 304 to move away from the second ratchet 302, so that the first ratchet 301 can only rotate in one direction. Since the first ratchet 301 is relatively fixed to the transmission sleeve 203, the transmission sleeve 203 can only rotate in one direction. By the same token, when the pressing key 307 presses the pressing rod 308 to swing in the clockwise direction, the second slide 306 drives the second pawl 304 to move toward the second ratchet 302 until it contacts and cooperates with the teeth of the second ratchet 302, and the first slide 305 drives the first pawl 303 to move away from the first ratchet 301, so that the second ratchet 302 can only move in one direction, and the transmission sleeve 203 can only move in one direction. Since the teeth of the first ratchet 301 and the second ratchet 302 face opposite directions, the first ratchet 301 and the second ratchet 302 can respectively limit the transmission sleeve 203 from rotating in different unidirectional directions.

[0067] Through the above-mentioned anti-rotation structure, the transmission sleeve 203 can be limited to rotate in one direction as needed to prevent the transmission sleeve 203 from reversing. Then the rotation direction of the reel 2 will also be limited to a switchable one-way rotation, and the rotation direction of the reel 2 is directly related to the tightness of the two traction wires. The cooperation of the pressing key 307, the pressure rod 308, the first slide 305, the second slide 306 and the two sets of ratchet pawls can be used to indicate the bending direction of the distal end of the catheter, which is convenient for medical staff to switch the bending angle of the distal end of the catheter. When the medical staff controls the distal end of the catheter to bend in one of the first angle and the second angle by rotating the driving wheel 201, there is no need to worry about the reverse bending of the distal end of the catheter due to the tension of the traction wire itself, which is convenient for medical staff to operate.

[0068] like Figure 5 and Figure 7As shown, in this embodiment, a slide groove 111 is provided on the shell 1, and the first slide 305 and the second slide 306 are both provided with ridges that cooperate with the slide groove 111. Taking the first slide 305 as an example, the first slide 305 has first ridges 311 provided on opposite sides of the outer wall, and the first ridges 311 are slidably matched with the slide groove 111 to guide the first slide 305. The second slide 306 adopts the same structure to cooperate with another slide groove 111.

[0069] The first slide 305 also includes a mounting cavity 312, and the first pawl 303 is rotatably mounted in the mounting cavity 312 via a first pin 316. One end of the first pawl 303 extends through the notch of the first slide 305, and the other end is connected to the inner wall of the mounting cavity 312 via a tension spring 314. Specifically, a fixing column 313 is provided on the inner wall of the mounting cavity 312, and one end of the tension spring 314 is connected to the fixing column 313, and the other end is connected to the other end of the first pawl 303 via a latch 315. The tension spring 314 is used to control the direction in which the first pawl 303 extends out of one end of the first slide 305, thereby ensuring that the first pawl 303 limits the first ratchet wheel 301 to rotate in one direction. The structure of the second slide 306 is exactly the same as that of the first slide 305, and the second slide 306 and the first slide 305 are installed in opposite directions on the housing 1, so that the first pawl 303 and the second pawl 304 cooperate with the gear teeth in different directions. A bottom plate 317 is disposed at the bottom of the first sliding seat 305 for limiting the rotation angle of the first pawl 303 .

[0070] The first slide 305 is provided with a mounting hole 318, and the pressure rod 308 can be inserted into the mounting hole 318 to drive the first slide 305 to move. The second slide 306 is also provided with a mounting hole, and the two ends of the pressure rod 308 can be respectively inserted into the corresponding mounting holes to drive the first slide 305 and the second slide 306 to move in opposite directions.

[0071] like Figure 5 As shown, a limit baffle 106 is provided on the top of the slide groove 105 , and the limit baffle 106 is used to limit the extreme sliding positions of the first slide seat 305 and the second slide seat 306 .

[0072] like Figure 2 and Figure 8As shown, in the present embodiment, the pressure rod 308 has a slot 325, the bottom of the slot 325 is an arc surface, the pressure key 307 is a boat-shaped button and is hinged on the shell 1, the pressure key 307 has a guide cylinder 323 arranged toward the pressure rod 308, and a pressure column 309 is arranged in the guide cylinder 323 through an elastic member 324, and the end of the pressure column 309 extends out of the guide cylinder 323 and extends to contact with the slot 325. When the pressure key 307 rotates, the pressure column 309 can be driven by the guide cylinder 323 to slide along the bottom of the slot 325, so that the pressure rod 308 is controlled to swing by the pressure column 309. The bottom surface of the slot 325 is an arc surface, and depressions can be formed at the opposite ends of the bottom of the slot 325 to limit the pressure column 309 and prevent the pressure key 307 from moving when no external force is applied. The pressure column 309 is arranged in the guide cylinder 323 through the elastic member 324 to facilitate the pressure column 309 to pass through the arc surface. When the end of the pressure column 309 starts to move from one end of the slot 325 toward the arc surface, the pressure column 309 is pressed to move into the guide cylinder 323. After the pressure column 309 moves into place, the restoring force of the elastic member 324 can push the pressure column 309 to extend and press the pressure rod 308.

[0073] like Figure 5 and Figure 8 As shown, the housing 1 is provided with a second pin shaft 112 and a third pin shaft 113 , the pressing key 307 is installed on the second pin shaft 112 through the first pin hole 321 , and the pressing rod 308 is installed on the third pin shaft 113 through the second pin hole 322 .

[0074] like Figure 8 As shown, a mounting groove 114 is provided on the shell 1, and the second pin shaft 112 is located on the side wall of the mounting groove 114. The push key 307 is suitable for moving in the mounting groove 114. Steps are provided on the opposite sides of the mounting groove 114. The opposite ends of the push key 307 are limited by the corresponding steps to prevent the push key 307 from moving at too large an angle.

[0075] like Figure 1 and Fig. 9 As shown, in an embodiment of the present application, a bending adjustment catheter device is provided, including the above-mentioned bending adjustment handle, and also including a catheter 5, the catheter 5 having a first traction wire channel 511 and a second traction wire channel 512 relatively arranged, the proximal end of the catheter 5 extends into the catheter installation position, the first fixed position of the reel 2 is connected to the proximal end of the first traction wire 41, the first traction wire 41 extends into the first traction wire channel 511, the second fixed position is connected to the proximal end of the second traction wire 42, the second traction wire 42 extends into the second traction wire channel 512, the distal end of the catheter 5 can be controlled to bend in different directions by the first traction wire 41 and the second traction wire 42, the specific control method has been described in detail above, and will not be repeated here.

[0076] like Figure 1As shown, in this embodiment, a fixing sleeve 121 is provided at the distal end of the handle, and a Luer connector 122 is provided at the proximal end of the handle. The catheter 5 passes through the fixing sleeve 121 and enters the inner cavity of the shell and communicates with the Luer connector 122.

[0077] like Figure 5 As shown, a fixing groove 115 is provided on the housing 1 , a slot hole is opened on the inner wall of the fixing groove 115 , and a protrusion is provided on the outer wall of the fixing sleeve 121 , and the protrusion cooperates with the slot hole to limit the fixing sleeve 121 on the fixing groove 115 .

[0078] like Figure 1 and Fig. 9 As shown, in this embodiment, the catheter 5 includes an inner layer 52, a reinforcement layer 53 and an outer layer 54 which are arranged in sequence from the inside to the outside. The first traction wire channel 511 and the second traction wire channel 512 are arranged between the reinforcement layer 53 and the outer layer 54. The reinforcement layer 53 can be made of a metal woven mesh, so as to reinforce the first traction wire channel 511 and the second traction wire channel 512 to prevent the traction wire from penetrating the corresponding traction wire channel.

[0079] like Figure 1 and Fig.10 As shown, in this embodiment, the catheter 5 includes a bending adjustment section 501 arranged at the distal end, and the first traction wire channel 511 and the second traction wire channel 512 extend to the opposite sides of the bending adjustment section 501 respectively, so that the traction wire can control the bending of the bending adjustment section 501, and the proximal end of the bending adjustment section 501 is provided with a tube body reinforcement section 502, and the tube body reinforcement section 502 can be a winding spring arranged between the inner layer 52 and the outer layer 54 to enhance the strength of the catheter 5, so that the process of pushing the catheter 5 is smoother and the probability of bending of the catheter 5 is reduced.

[0080] like Fig.10 As shown, in this embodiment, a developing ring 503 is provided at the distal end of the catheter 5 to facilitate medical personnel to observe the position and angle of the distal end of the catheter 5 through an external developing device.

[0081] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A bending handle, characterized in that: include: Housing (1); A catheter installation position, arranged in the inner cavity of the housing (1) and extending along a first direction; The bending adjustment component comprises a reel (2) rotatably arranged in the shell (1), one end of the reel (2) is provided with a first fixed position, and the other end is provided with a second fixed position, the rotation axis of the reel (2) extends along a second direction, the first direction and the second direction are skewed and perpendicular, and the winding directions of the traction wire at the first fixed position and the second fixed position are opposite.

2. The bending handle according to claim 1, characterized in that: The bending adjustment assembly comprises a driving wheel (201) and a driven wheel (202) which are rotatably arranged inside the housing (1); the driving wheel (201) is transmission-connected to the driven wheel (202) via a transmission assembly; the driven wheel (202) is coaxially arranged with the reel (2) for driving the reel (2) to rotate synchronously; and the housing (1) is provided with a notch (104) for allowing the driving wheel (201) to partially extend.

3. The bending handle according to claim 2, characterized in that: The transmission assembly comprises: A transmission sleeve (203) is rotatably arranged at the catheter installation position and extends along a first direction, the outer wall of the transmission sleeve (203) is provided with a first thread, the driven wheel (202) is provided with a first gear tooth, and the first thread and the first gear tooth are meshed for transmission; A first transmission wheel (204) is coaxially connected to the driving wheel (201); The second transmission wheel (205) is coaxially arranged with the transmission sleeve (203) and is transmission-connected with the first transmission wheel (204).

4. The bending handle according to claim 3, characterized in that: A first retaining wall (206) and a second retaining wall (207) are arranged in the shell (1); the first retaining wall (206) and the second retaining wall (207) are respectively provided with a first through hole (212) and a second through hole (213) of the same size and corresponding positions; the transmission sleeve (203) is rotatably arranged on the first through hole (212) and the second through hole (213); two ends of the transmission sleeve (203) respectively extend out of the first through hole (212) and the second through hole (213), and the opposite two ends are respectively provided with limiting engagement with the first retaining wall (206) and the second retaining wall (207).

5. The bending handle according to claim 4, characterized in that: A third blocking wall (208) is arranged between the first blocking wall (206) and the second blocking wall (207); the third blocking wall (208) is provided with a third through hole (214); the transmission sleeve (203) passes through the third through hole (214); the third blocking wall (208) and the second blocking wall (207) are respectively provided with a fourth through hole (215) and a fifth through hole (216) of the same size and corresponding positions; the driving wheel (201) and the first driving wheel (201) are rotatably arranged on the fourth through hole (215) and the fifth through hole (216) via a rotating shaft (211); the first transmission wheel (204) and the second transmission wheel (205) are limitedly matched with the second blocking wall (207) and the third blocking wall (208).

6. The bending handle according to claim 3, characterized in that: The housing (1) is provided with a rotation-stopping structure, the rotation-stopping structure comprising: A first ratchet wheel (301) and a second ratchet wheel (302) are coaxially arranged with the transmission sleeve (203) so as to be non-rotatable, and the teeth of the first ratchet wheel (301) and the second ratchet wheel (302) face in opposite directions; A first pawl (303) and a second pawl (304) are respectively arranged on the housing (1) via a first slide seat (305) and a second slide seat (306); The pressing assembly comprises a pressing key (307) and a pressing rod (308), wherein the middle portion of the pressing rod (308) is hinged on the shell (1), one end of the pressing rod (308) is connected to the first slide seat (305), and the other end is connected to the second slide seat (306), and the pressing key (307) is used to drive the pressing rod (308) to swing in a clockwise or counterclockwise direction.

7. The bending handle according to claim 6, characterized in that: The pressure rod (308) has a slot (325), the bottom of the slot (325) is an arc surface, the pressure key (307) is a boat-shaped button and is hinged on the shell (1), the pressure key (307) has a guide tube (323) arranged toward the pressure rod (308), a pressure column (309) is arranged in the guide tube (323) through an elastic member, and the end of the pressure column (309) extends out of the guide tube (323) and extends to contact the slot (325).

8. A catheter bending device, characterized in that: It comprises the bending adjustment handle as described in any one of claims 1 to 7, and also comprises a catheter (5), wherein the catheter (5) has a first traction wire channel (511) and a second traction wire channel (512) arranged relatively to each other, the proximal end of the catheter (5) extends into the catheter installation position, the first fixed position of the reel (2) is connected to the proximal end of the first traction wire (41), the first traction wire (41) extends into the first traction wire channel (511), the second fixed position is connected to the proximal end of the second traction wire (42), and the second traction wire (42) extends into the second traction wire channel (512).

9. The bending catheter device according to claim 8, characterized in that: The distal end of the handle is provided with a fixing sleeve (121), the proximal end of the handle is provided with a Luer connector (122), and the catheter (5) passes through the fixing sleeve (121) to enter the inner cavity of the housing (1) and communicates with the Luer connector (122).

10. The bending catheter device according to claim 8, characterized in that: The catheter comprises an inner layer (52), a reinforcement layer (53) and an outer layer (54) which are arranged in sequence from the inside to the outside, and the first traction wire channel (511) and the second traction wire channel (512) are arranged between the reinforcement layer (53) and the outer layer (54).

11. The bending catheter device according to claim 8, characterized in that: The catheter comprises a bending adjustment section (501) arranged at the distal end, the first traction wire channel (511) and the second traction wire channel (512) extend to opposite sides of the bending adjustment section (501) respectively, and a tube reinforcement section (502) is arranged at the proximal end of the bending adjustment section (501).

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