Spring-embedded elastic catheter guide wire clip and its working method

Abstract

The present invention provides an elastic catheter guide wire clip with an internal spring and its working method in the technical field of interventional surgical robots, including a left clip rear sleeve, a left clip front sleeve, and a right clip base. The left clip rear sleeve is connected to the left clip front sleeve, and the inner cavity of the left clip rear sleeve is communicated with the inner cavity of the left clip front sleeve. A push cap member is provided in the left clip rear sleeve, and a left clamping plate is provided in the left clip front sleeve. The push cap member is arranged corresponding to the left clamping plate. A right clamping plate is provided in the right clip base. Elastic members for resetting are respectively sleeved on the right clamping plate and the left clamping plate. The other end of the left clamping plate is arranged corresponding to the right clamping plate. The left clamping plate is arranged to move by the push of the push cap member. After the left clamping plate moves, it clamps the guide wire with the right clamping plate. The present invention improves the elastic catheter guide wire clip, makes the spring internal, so as to improve the reliability of the clamp for clamping the catheter guide wire, improve the safety during use, and also make the instrument more beautiful.

Description

Technical Field

[0001] The present invention relates to the technical field of interventional surgical robots, and in particular, to an elastic catheter guide wire clip with an internal spring and its working method. Background Art

[0002] In an interventional surgical robot, a self-locking mechanism, such as a lead screw nut mechanism, is often used to clamp a catheter or a guide wire. Self-locking can also be achieved through a ratchet mechanism, which cooperates with a spring to provide a clamping force, thereby realizing a self-locking elastic catheter guide wire clip.

[0003] This self-locking elastic catheter guide wire clip has a relatively complex structure, which poses high requirements for processing and assembly. In addition, its external self-locking ratchet and return spring can be seen by users, which may pose a safety hazard to the instrument and also affect the aesthetics. The external arrangement of the ratchet and the spring is also not conducive to the assembly between this fixture and other components, affecting the working effect of the clip.

[0004] After searching the prior art, it is found that the Chinese invention patent publication number is CN209809310U, which discloses a clip for a medical catheter or a guide wire. The technical key points include a first clip body and a second clip body hinged together through a rotating shaft at the middle position, an elastic member is arranged between the first clip body and the second clip body, and one end of the first clip body and the second clip body abuts against each other under the elastic force of the elastic member to form a clamping end. At one end of the clamping end, opposite clamping plates are respectively arranged on the opposite surfaces of the first clip body and the second clip body, and a through-long arc groove is opened on the opposite surfaces of the clamping plates. The length direction of the arc groove is parallel to the axis of the rotating shaft. The clamping plate includes a fixed part attached to the inner side surfaces of the first clip body and the second clip body and an extension part extending from one side wall of the first clip body or the second clip body. This patented technology has the above-mentioned related problems. Summary of the Invention

[0005] Aiming at the defects in the prior art, the purpose of the present invention is to provide an elastic catheter guide wire clip with an internal spring and its working method.

[0006] An elastic catheter guide wire clip with an internal spring according to the present invention includes a left clip rear sleeve, a left clip front sleeve, and a right clip base. The left clip rear sleeve is connected to the left clip front sleeve, and the inner cavity of the left clip rear sleeve is communicated with the inner cavity of the left clip front sleeve;

[0007] A push cap member is provided inside the left clamping rear sleeve, a left clamping plate is provided inside the left clamping front sleeve, the push cap member is arranged corresponding to the left clamping plate, a right clamping plate is provided inside the right clamping base, elastic members for resetting are respectively sleeved on the right clamping plate and the left clamping plate, the other end of the left clamping plate is arranged corresponding to the right clamping plate, the left clamping plate is movably arranged by the push of the push cap member, and the left clamping plate clamps the guide wire with the right clamping plate after moving.

[0008] In some embodiments, a connecting plate is provided on the right clamping base, the connecting plate extends to the connection of the left clamping rear sleeve and the left clamping front sleeve, and the right clamping base is fixedly arranged with the left clamping rear sleeve and the left clamping front sleeve through the connecting plate.

[0009] In some embodiments, a push cap slider and a push cap small inclined surface are provided on the push cap member, the push cap slider is arranged on the outer wall of the push cap member, the push cap small inclined surface is opened at one end of the push cap member arranged inside the left clamping rear sleeve, and the push cap small inclined surface is arranged in a serrated shape;

[0010] A rear sleeve long groove is provided on the left clamping rear sleeve, and the push cap slider is slidably arranged in the rear sleeve long groove.

[0011] In some embodiments, a rotary lock is provided inside the inner cavity of the left clamping rear sleeve, a lock strip is provided on the rotary lock, there are multiple lock strips, and the multiple lock strips are circumferentially arranged on the outer wall of the rotary lock, and a lock tooth is provided at the end of the lock strip;

[0012] The lock strip is arranged corresponding to the push cap small inclined surface in the rear sleeve long groove, a rear sleeve clamping groove is provided inside the left clamping rear sleeve, the lock strip rotates under the pressing of the push cap member, and the lock tooth rotates to be engaged with the rear sleeve clamping groove.

[0013] In some embodiments, the end faces of the push cap small inclined surface, the rear sleeve clamping groove and the lock tooth are respectively inclined surfaces, and the inclined surfaces are arranged at 45°.

[0014] In some embodiments, an orientation slider is provided between the left clamping plate and the rotary lock, a slider strip is provided on the orientation slider, a front sleeve long groove is opened on the inner wall of the left clamping front sleeve, and the orientation slider is slidably arranged inside the left clamping front sleeve by sliding through the slider strip in the front sleeve long groove.

[0015] In some embodiments, a reset spring is sleeved on the left splint. One end of the reset spring is arranged in the inner cavity of the directional slider, and the other end of the reset spring is correspondingly arranged on the inner wall of the left splint. A front sleeve short groove is provided on the front sleeve of the left clip, and a left sliding strip is provided on the left splint. The left splint is slidably arranged in the front sleeve short groove through the left sliding strip and is slidably arranged corresponding to the front sleeve of the left clip.

[0016] In some embodiments, a right base groove is formed on the right clip base, and a right sliding strip is provided on the right splint. The right splint is slidably arranged in the right base groove through the right sliding strip and is slidably arranged in the right clip base. A thrust spring is arranged in the inner cavity of the right clip base, and the thrust spring is arranged between the right splint and the right clip base.

[0017] In some embodiments, a right tail stop is fixedly arranged on the right clip base, and the right tail stop is arranged on the side of the thrust spring where the right splint is not provided.

[0018] The present invention also provides a working method of a spring - built elastic catheter guide wire clip. The push cap is located at the left - most side of the rear sleeve of the left clip. Under the action of the elastic member, the rotating lock, the directional slider, and the left splint in the rear sleeve of the left clip and the front sleeve of the left clip are also at the left - most side. The left splint and the right splint are in an open state, and the right wall of the front sleeve of the left clip is in contact with the left splint;

[0019] Press the push cap to the right. The push cap moves to the right - most side. The push cap will push the left splint to move to the right - most side through the rotating lock and the directional slider. Release the push cap, and the left splint and the right splint are in an automatically locked and clamped state, and the guide wire is clamped by the left splint and the right splint.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. Through the structural design of the present invention, the spring and the ratchet are placed in the cavity of the clip. The whole clip shows functions such as self - locking and automatic clamping, so that the spring is built - in, which improves the reliability of the clip for clamping the catheter guide wire, enhances the safety during use, and also makes the instrument more beautiful and practical;

[0022] 2. By using the cylindrical inner cavity shape and the sliding strip and sliding groove structure, the coaxiality of the clip is good, and the circumferential positioning accuracy is high, ensuring that the guide wire is clamped at a fixed angle. The internal force of the clip is reasonable, easy to use and durable;

[0023] 3. By setting the push cap, the shape and structure of the push cap are reasonable, which is convenient for pressing. The clip is convenient to operate during use and is also easy to adapt to the mechanisms of other parts of the robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments read in conjunction with the accompanying drawings:

[0025] Figure 1 Schematic structural view of the elastic catheter guide wire clip with a built-in spring according to the present invention;

[0026] Figure 2 Schematic cross-sectional view of the elastic catheter guide wire clip with a built-in spring according to the present invention;

[0027] Figure 3 Schematic working view of the elastic catheter guide wire clip with a built-in spring according to the present invention;

[0028] Figure 4 Schematic cross-sectional working view of the elastic catheter guide wire clip with a built-in spring according to the present invention;

[0029] Figure 5 Schematic structural view of the push cap member according to the present invention;

[0030] Figure 6 Schematic structural view of the rear sleeve of the left clip according to the present invention;

[0031] Figure 7 Schematic structural view of the rotary lock according to the present invention;

[0032] Figure 8 Schematic structural view of the directional slider according to the present invention;

[0033] Figure 9 Schematic structural view of the left splint according to the present invention;

[0034] Figure 10 Schematic structural view of the front sleeve of the left clip according to the present invention;

[0035] Figure 11 Schematic structural view of the right clip base according to the present invention;

[0036] Figure 12 Schematic structural view of the right splint according to the present invention;

[0037] Reference numerals:

[0038] Detailed description of the specific implementation

[0039] The present invention will be described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all fall within the protection scope of the present invention.

[0040] As Figure 1 shown is a schematic structural view of the elastic catheter guide wire 8 clip with a built-in spring. As Figure 2 shown is a schematic sectional view of the elastic catheter guide wire 8 clip with a built-in spring, including a left clip rear sleeve 2, a left clip front sleeve 3, and a right clip base 6. The left clip rear sleeve 2 is connected to the left clip front sleeve 3, and the inner cavity of the left clip rear sleeve 2 is in communication with the inner cavity of the left clip front sleeve 3.

[0041] A push cap member 1 is provided inside the left clip rear sleeve 2, a left clamping plate 4 is provided inside the left clip front sleeve 3, the push cap member 1 is arranged corresponding to the left clamping plate 4, a right clamping plate 5 is provided inside the right clip base 6, elastic members for resetting are respectively sleeved on the right clamping plate 5 and the left clamping plate 4, the other end of the left clamping plate 4 is arranged corresponding to the right clamping plate 5, the left clamping plate 4 is movably arranged by the pushing of the push cap member 1, and after the left clamping plate 4 moves, it clamps the guide wire 8 with the right clamping plate 5.

[0042] A connecting plate is provided on the right clip base 6, the connecting plate extends to the connection part of the left clip rear sleeve 2 and the left clip front sleeve 3, and the right clip base 6 is fixedly arranged with the left clip rear sleeve 2 and the left clip front sleeve 3 through the connecting plate.

[0043] As Figure 5 shown is a schematic structural view of the push cap member 1. The push cap member 1 is provided with a push cap slider 101 and a push cap small inclined surface 102. The push cap slider 101 is arranged on the outer wall of the push cap member 1, the push cap small inclined surface 102 is opened at one end of the push cap member 1 arranged inside the left clip rear sleeve 2, and the push cap small inclined surface 102 is arranged in a serrated shape;

[0044] As Figure 6 shown is a schematic structural view of the left clip rear sleeve 2. The left clip rear sleeve 2 is provided with a rear sleeve long groove 22, and the push cap slider 101 is slidably arranged in the rear sleeve long groove 22. As Figure 7 shown is a schematic structural view of the rotary lock 9. A rotary lock 9 is provided inside the inner cavity of the left clip rear sleeve 2. The rotary lock 9 is provided with lock catch slide bars 92. There are multiple lock catch slide bars 92, and the multiple lock catch slide bars 92 are circumferentially arranged on the outer wall of the rotary lock 9. The end of the lock catch slide bar 92 is provided with a lock catch tooth 91;

[0045] The lock catch slide bar 92 is arranged corresponding to the push cap small inclined surface 102 in the rear sleeve long groove 22. A rear sleeve clamping groove 21 is provided inside the left clip rear sleeve 2. The lock catch slide bar 92 rotates under the pressing of the push cap member 1, and the lock catch tooth 91 rotates to be engaged with the rear sleeve clamping groove 21. The end faces of the push cap small inclined surface 102, the rear sleeve clamping groove 21, and the lock catch tooth 91 are all inclined surfaces, and the inclined surfaces are arranged at 45°.

[0046] A directional slider 7 is provided between the left clamping plate 4 and the rotary lock 9. As Figure 8 shown is a schematic structural view of the directional slider 7. The directional slider 7 is provided with a slider slide bar 71.Figure 10 As shown in the schematic structural diagram of the front sleeve 3 of the left clamp, a front sleeve long groove 31 is provided on the inner wall of the front sleeve 3 of the left clamp. The directional slider 7 is slidably arranged in the front sleeve long groove 31 through a slider slide bar 71 and is thus slidably arranged in the front sleeve 3 of the left clamp.

[0047] A return spring 11 is sleeved on the left clamping plate 4. One end of the return spring 11 is arranged in the inner cavity of the directional slider 7, and the other end of the return spring 11 is correspondingly arranged on the inner wall of the left clamping plate 4. A front sleeve short groove 32 is provided on the front sleeve 3 of the left clamp. As Figure 9 As shown in the schematic structural diagram of the left clamping plate 4, a left slide bar 41 is provided on the left clamping plate 4. The left clamping plate 4 is slidably arranged in the front sleeve short groove 32 through the left slide bar 41 and is thus slidably arranged corresponding to the front sleeve 3 of the left clamp.

[0048] As Figure 11 As shown in the schematic structural diagram of the right clamp base 6, a right base groove 61 is provided on the right clamp base 6. As Figure 12 As shown in the schematic structural diagram of the right clamping plate 5, a right slide bar 51 is provided on the right clamping plate 5. The right clamping plate 5 is slidably arranged in the right base groove 61 through the right slide bar 51 and is thus slidably arranged in the right clamp base 6. A thrust spring 12 is arranged in the inner cavity of the right clamp base 6. The thrust spring 12 is arranged between the right clamping plate 5 and the right clamp base 6. A right tail stop 10 is fixedly arranged on the right clamp base 6. The right tail stop 10 is arranged on the side of the thrust spring 12 where there is no right clamping plate 5.

[0049] Regarding the working method of the spring-integrated elastic catheter guide wire 8 clamp, the push cap member 1 is located at the leftmost side of the rear sleeve 2 of the left clamp. Under the action of the elastic member, the rotary lock 9, the directional slider 7, and the left clamping plate 4 in the rear sleeve 2 of the left clamp and the front sleeve 3 of the left clamp are also at the leftmost side. The left clamping plate 4 and the right clamping plate 5 are in an open state, and the right wall of the front sleeve 3 of the left clamp is in contact with the left clamping plate 4. As Figure 2 As shown in the figure, the return spring 11 extends to the longest, but is still in a slightly pre-compressed state. The right wall of the front sleeve 3 of the left clamp is in contact with the left clamping plate 4. For the left clamping plate 4, the restoring force of the return spring 11 acting on it balances the aforementioned contact force.

[0050] As Figure 3 As shown in the working schematic diagram of the spring-integrated elastic catheter guide wire 8 clamp, press the push cap member 1 to the right. The push cap member 1 moves to the rightmost side. The push cap will push the left clamping plate 4 to move to the rightmost side through the rotary lock 9 and the directional slider 7. Release the push cap member 1, and the left clamping plate 4 and the right clamping plate 5 are in an automatically locked and clamped state, and the guide wire 8 is clamped by the left clamping plate 4 and the right clamping plate 5.

[0051] As Figure 4The working sectional view of the spring - built elastic catheter guide wire 8 clip is shown. There are circumferentially - arranged grooves on the inner wall of the rear sleeve 2 of the left clip, and the rotary lock 9 is stuck in the grooves. It can also be seen that the length of the return spring 11 is shorter than before, and the restoring force of the spring is greater than before. For the local unit composed of the rotary lock 9, the directional slider 7, and the left splint 4, the restoring force exerted by the return spring 11 balances the contact force received by the rotary lock 9 in the grooves. Let the stiffness of the return spring be small to reduce the load on the internal parts. In addition, the right splint 5 also moves to the right, compressing the thrust spring 12. It can be analyzed that the clamping force of the guide wire 8 is equal to the restoring force of the thrust spring 12 at this time.

[0052] At Figure 3 the shown clamping position, press the push cap again and then release it, and the clip will return to Figure 1 the shown open state.

[0053] In order to ensure that the circumferential position of the push cap part 1 is correct during movement, there is a push cap slider 101 on it. At the same time, there are circumferentially - arranged long grooves on the inner wall of the rear sleeve 2 of the left clip. During movement, the push cap slider 101 is always located in the long groove of the rear sleeve 2 of the left clip. There is a lock - strip 92 structure on the rotary lock 9, which is also to ensure that its circumferential position is correct when it moves to the left. During the movement of the left splint 4, the slide bar of the directional slider 7 moves in the long groove 31 of the front sleeve, and the slide bar of the left splint 4 moves in the short groove 32 of the front sleeve, ensuring the correct circumferential position of the left splint 4. During the movement of the right splint 5, the slide bar of the right splint 5 remains in the groove of the right clip base 6, ensuring the correct circumferential position of the right splint 5.

[0054] In addition, the material used to make this fixture should be biocompatible and produced in a sterile environment.

[0055] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0056] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above - mentioned specific embodiments. Those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A spring - built elastic catheter guide wire clip, characterized in that It includes a left clamping rear sleeve (2), a left clamping front sleeve (3), and a right clamping base (6). The left clamping rear sleeve (2) is connected to the left clamping front sleeve (3), and the inner cavity of the left clamping rear sleeve (2) is communicated with the inner cavity of the left clamping front sleeve (3). A push cap member (1) is provided in the left clamping rear sleeve (2), a left clamping plate (4) is provided in the left clamping front sleeve (3), the push cap member (1) is arranged corresponding to the left clamping plate (4), a right clamping plate (5) is provided in the right clamping base (6), elastic members for resetting are respectively sleeved on the right clamping plate (5) and the left clamping plate (4), the other end of the left clamping plate (4) is arranged corresponding to the right clamping plate (5), the left clamping plate (4) is movably arranged by the push of the push cap member (1), and the left clamping plate (4) clamps a guide wire (8) with the right clamping plate (5) after moving. The push cap member (1) is provided with a push cap slider (101) and a push cap small inclined surface (102). The push cap slider (101) is arranged on the outer wall of the push cap member (1), and the push cap small inclined surface (102) is opened at one end of the push cap member (1) arranged in the left clamping rear sleeve (2). The push cap small inclined surface (102) is arranged in a serrated shape. The left clamping rear sleeve (2) is provided with a rear sleeve long groove (22), and the push cap slider (101) is slidably arranged in the rear sleeve long groove (22). A rotary lock (9) is provided in the inner cavity of the left clamping rear sleeve (2). The rotary lock (9) is provided with lock strip slides (92). There are multiple lock strip slides (92), and the multiple lock strip slides (92) are circumferentially arranged on the outer wall of the rotary lock (9). The end of the lock strip slide (92) is provided with a lock tooth (91). The lock strip slide (92) is arranged corresponding to the push cap small inclined surface (102) in the rear sleeve long groove (22). A rear sleeve card slot (21) is provided in the left clamping rear sleeve (2). The lock strip slide (92) rotates under the pressing of the push cap member (1), and the lock tooth (91) rotates to be engaged with the rear sleeve card slot (21).

2. The spring-integrated elastic catheter guide wire clip according to claim 1, wherein The right clamping base (6) is provided with a connecting plate, and the connecting plate extends to the connection of the left clamping rear sleeve (2) and the left clamping front sleeve (3). The right clamping base (6) is fixedly arranged with the left clamping rear sleeve (2) and the left clamping front sleeve (3) through the connecting plate.

3. The elastic catheter guide wire clip with an internal spring according to claim 1, characterized in that The end faces of the push cap small inclined surface (102), the rear sleeve card slot (21), and the lock tooth (91) are respectively inclined surfaces, and the inclined surfaces are arranged at 45°.

4. The elastic catheter guide wire clip with a built-in spring according to claim 1, characterized in that, A directional slider (7) is provided between the left clamping plate (4) and the rotary lock (9). The directional slider (7) is provided with a slider slide (71). A front sleeve long groove (31) is opened on the inner wall of the left clamping front sleeve (3). The directional slider (7) is slidably arranged in the left clamping front sleeve (3) by sliding in the front sleeve long groove (31) through the slider slide (71).

5. The spring-integrated elastic catheter guide wire clip according to claim 4, characterized in that, A return spring (11) is sleeved on the left splint (4). One end of the return spring (11) is arranged in the inner cavity of the directional slider (7), and the other end of the return spring (11) is correspondingly arranged on the inner wall of the left splint (4). A front sleeve short groove (32) is provided on the left front sleeve (3), and a left sliding strip (41) is provided on the left splint (4). The left splint (4) is slidably arranged in the front sleeve short groove (32) through the left sliding strip (41) and is slidably arranged corresponding to the left front sleeve (3).

6. The elastic catheter guide wire clip with an internal spring according to claim 5, characterized in that, A right base groove (61) is formed on the right clip base (6), and a right sliding strip (51) is provided on the right splint (5). The right splint (5) is slidably arranged in the right base groove (61) through the right sliding strip (51) and is slidably arranged in the right clip base (6). A thrust spring (12) is arranged in the inner cavity of the right clip base (6), and the thrust spring (12) is arranged between the right splint (5) and the right clip base (6).

7. The elastic catheter guide wire clip with an internal spring according to claim 6, characterized in that, A right tail stop (10) is fixedly arranged on the right clip base (6), and the right tail stop (10) is arranged on the side of the thrust spring (12) without the right splint (5).

8. A working method of the spring-integrated elastic catheter guide wire clip according to any one of claims 1-7, characterized in that, The push cap member (1) is located at the leftmost side of the left rear sleeve (2). The rotation lock (9), directional slider (7), and left splint (4) in the left rear sleeve (2) and the left front sleeve (3) are also at the leftmost side under the action of the elastic member. The left splint (4) and the right splint (5) are in an open state, and the right wall of the left front sleeve (3) is in contact with the left splint (4). Press the push cap member (1) to the right. The push cap member (1) moves to the rightmost side. The push cap will push the left splint (4) to the rightmost side through the rotation lock (9) and the directional slider (7). Release the push cap member (1), and the left splint (4) and the right splint (5) are in an automatically locked and clamped state, and the guide wire (8) is clamped by the left splint (4) and the right splint (5).

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