Opening opening device for catheter protective sleeve

Abstract

The utility model relates to a guide pipe protective sleeve opening expanding device, and belongs to the technical field of guide pipe protective sleeve mounting device.The guide pipe protective sleeve opening expanding device comprises a base shell, an opening expanding assembly, a sliding seat and an automatic driving part, the sliding seat is slidably connected to the interior of the base shell, and the opening expanding assembly is slidably connected to the sliding seat and is suitable for being inserted into a rubber protective sleeve in a conventional state; the sliding seat is suitable for driving the opening expanding assembly to move so as to expand the rubber protective sleeve, and the automatic driving piece is connected with the base shell and drives the sliding seat to drive the opening expanding assembly to be expanded. According to the invention, the convenience of mounting the protective sleeve at the end part of the conduit is improved; the processing efficiency is improved; the operation is simple.

Description

Technical Field

[0001] The present application relates to the technical field of catheter protective sleeve installation devices, and in particular to a catheter protective sleeve opening support device. Background Art

[0002] Before leaving the factory, a rubber protective sleeve is placed over the round end of the catheter to protect and seal the end. To prevent the rubber sleeve from falling off once attached to the catheter and to improve its sealing effect, the inner diameter of the rubber sleeve is typically much smaller than the outer diameter of the catheter end, allowing the catheter to fit inside the sleeve with an interference fit.

[0003] In the related art, when putting the rubber protective sleeve on the end of the catheter, the staff needs to first insert a small part of the catheter end into the opening of the rubber protective sleeve, and then pull the rubber protective sleeve hard to make the opening of the rubber protective sleeve expand due to its own elastic force; when the inner diameter of the opening of the rubber protective sleeve is larger than the outer diameter of the catheter end, the staff will completely insert the catheter end into the rubber protective sleeve, and then release the rubber protective sleeve without pulling it. At this time, the rubber protective sleeve will tightly wrap around the end of the catheter due to its own elasticity. The above-mentioned whole process of putting on the rubber protective sleeve is relatively cumbersome and inconvenient, and it is time-consuming and labor-intensive. When mass production is carried out, it will lead to low production efficiency. Summary of the Invention

[0004] In order to improve the convenience of installing a protective sleeve at the end of a catheter, the present application provides a catheter protective sleeve support device.

[0005] The present application provides a catheter protective sleeve opening support device, which adopts the following technical solution:

[0006] A catheter protective sleeve opening device comprises a base shell, an opening assembly, a sliding seat and an automatic driving member, wherein the sliding seat is slidably connected to the inside of the base shell, the opening assembly is slidably connected to the sliding seat, the opening assembly is suitable for being inserted into the rubber protective sleeve, the sliding seat is suitable for driving the opening assembly to move so as to open the rubber protective sleeve, the sliding seat and the opening assembly are symmetrically arranged in two groups, the two sliding seats correspond to the two groups of the opening assemblies one-to-one, the automatic driving member is connected to the base shell, the two sliding seats are movably connected to the automatic driving member, and the automatic driving member is suitable for driving the two sliding seats to move away from each other;

[0007] When the opening assembly is in the open state, the automatic driving member is actuated, and the two sets of sliding seats move in opposite directions and drive the corresponding opening assembly to move to open the rubber protective sleeve. The opening of the rubber protective sleeve after opening is larger than the outer diameter of the end of the catheter;

[0008] When the opening assembly is in the contracted state, the portion of the opening assembly inserted into the rubber protective sleeve in the normal state is in clearance fit with the rubber protective sleeve.

[0009] Optionally, the support assembly includes a first sliding rod and a second sliding rod, and the first sliding rod and the second sliding rod are respectively slidably installed on opposite sides of the sliding seat, and the sliding directions of the first sliding rod and the second sliding rod are perpendicular to the sliding direction of the sliding seat. When the sliding seat moves, the first sliding rod and the second sliding rod move toward or away from each other.

[0010] Optionally, a first sliding groove and a second sliding groove with the same extension direction are respectively provided on opposite sides of the sliding seat, and the extension directions of the first sliding groove and the second sliding groove are both perpendicular to the sliding direction of the sliding seat. The first sliding rod is inserted into the first sliding groove and slides in the first sliding groove, and the second sliding rod is inserted into the second sliding groove and slides in the second sliding groove.

[0011] Optionally, the support assembly also includes a first support hook and a second support hook suitable for being inserted into the rubber protective cover, the first support hook is obliquely installed on the first sliding rod and moves synchronously with the first sliding rod, the second support hook is obliquely installed on the second sliding rod and moves synchronously with the second sliding rod, the inclination directions of the first support hook and the second support hook are consistent and parallel to each other, when the first sliding rod and the second sliding rod move, the moving direction of the first support hook is perpendicular to the moving direction of the second support hook.

[0012] Optionally, a first inclined driving groove is provided on one side of the base shell close to the first sliding rod, and the first sliding rod is provided with a first driving column, which is inserted into the first inclined driving groove. When the sliding seat moves, the first sliding rod moves relative to the base shell under the action of the first driving column and the first inclined driving groove.

[0013] Optionally, a second inclined driving groove is provided on one side of the base shell close to the second sliding rod, and the second sliding rod is provided with a second driving column, which is inserted into the second inclined driving groove. When the sliding seat moves, the second sliding rod moves relative to the base shell under the action of the second driving column and the second inclined driving groove.

[0014] Optionally, the projection of the first inclined driving groove on the inner wall of the second inclined driving groove and the shape of the cross section of the second inclined driving groove are "cross" rotated ninety degrees clockwise, and the opening after the two first support hooks and the two second support hooks support the rubber protective cover is square.

[0015] Optionally, the catheter protective sleeve support device also includes a driving assembly movably installed in the base shell, the driving assembly includes a driving block and a driving connecting rod, the automatic driving component contacts the driving block and drives the driving block to move, the driving block is slidingly installed in the base shell, two driving connecting rods are provided, the two driving connecting rods are respectively arranged on opposite sides of the sliding seat, the sides of the two driving connecting rods that are close to each other are hingedly connected to the driving block, and the sides of the two driving connecting rods that are away from each other are respectively hingedly connected to the two sliding seats to drive the two sliding seats to move toward or away from each other.

[0016] Optionally, the driving assembly further includes two reset springs, one end of the two reset springs being connected to the two driving connecting rods respectively; the other end being connected to the base shell, and the reset springs being suitable for driving the driving block to reset so as to drive the two groups of the support assemblies to a contracted state.

[0017] Optionally, the driving block is fixed with a limit column, the base shell is provided with an orientation groove, the limit column is inserted into the orientation groove and slides in the orientation groove, the base shell is slidably connected with an adjustment plate, and the adjustment plate is suitable for adjusting and limiting the moving distance of the limit column. When the support assembly is in an open state, the limit column abuts against the adjustment plate.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] The rubber protective sleeve is placed on the two first opening hooks and the two second opening hooks, and the automatic driving component can drive the two groups of opening components to open. After the two groups of opening components are opened, the rubber protective sleeve can be opened under the action of the two first opening hooks and the two second opening hooks, so that its opening is expanded. After that, the end of the catheter can be directly and smoothly inserted into the rubber protective sleeve. After that, the rubber protective sleeve is pushed down from the device through the catheter, so that the rubber protective sleeve can be placed on the catheter and tightly wrapped around the catheter. The above structure is easy to operate and relatively automated, which can greatly improve production and processing efficiency;

[0020] Typically, the catheter is a circular tube. Therefore, during movement, the two first opening-opening hooks and the two second opening-opening hooks can, through the action of the first inclined driving groove and the second inclined driving groove, make the opening of the rubber protective sleeve after being opened into a square. Compared with a rectangular opening, the square opening can make the distance between the catheter end and each side of the opening the same, thereby improving the error tolerance when the catheter end is inserted into the rubber protective sleeve, making the catheter insertion into the rubber protective sleeve through the opening smoother, thereby improving production efficiency.

[0021] The overall structure is relatively compact, and the different structures are linked to each other. The two first opening hooks and the two second opening hooks can be controlled to move synchronously in the specified direction by the automatic driving member driving the driving block to move, which is simple to operate.

[0022] While the first sliding rod and the second sliding rod move synchronously with the sliding seat, the first sliding rod and the second sliding rod can also move toward or away from each other to enable the first opening hook and the second opening hook to complete the opening action, with a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the support assembly in the contracted state in an embodiment of the present application.

[0024] Figure 2 This is a diagram of the internal structure of the base shell when the support assembly is in the retracted state in the embodiment of the present application.

[0025] Figure 3 It is an exploded view of the first sliding rod, the second sliding rod and the sliding seat in the embodiment of the present application.

[0026] Figure 4 This is a diagram of the coordination structure of the first substrate and the support opening assembly in an embodiment of the present application.

[0027] Figure 5 This is a diagram of the internal structure of the base shell when the support assembly is in the open state in the embodiment of the present application.

[0028] Figure 6 This is an exploded view of the base shell in the embodiment of the present application when the support assembly is in the open state.

[0029] Explanation of the accompanying drawings: 1. Base shell; 11. First substrate; 111. First inclined drive groove; 112. Orienting groove; 12. Second substrate; 121. Second inclined drive groove; 13. Bottom plate; 14. Side plate; 15. Adjustment plate; 151. Waist-shaped adjustment hole; 152. Adjustment slope; 2. Support assembly; 21. First sliding rod; 22. Second sliding rod; 23. First support hook; 24. Second support hook; 25. First drive column; 26. Second drive column; 3. Sliding seat; 31. First sliding groove; 32. Second sliding groove; 4. Automatic drive component; 5. Drive assembly; 51. Drive block; 511. Limit column; 52. Drive connecting rod; 53. Return spring. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-6 This application is described in further detail.

[0031] The embodiment of the present application discloses a catheter protective sleeve opening support device. Figure 1 and Figure 2The catheter protective sleeve opening device includes a base shell 1, an opening assembly 2, a sliding seat 3, and an automatic drive 4. The sliding seat 3 is slidably connected to the interior of the base shell 1, and the opening assembly 2 is slidably connected to the sliding seat 3. The opening assembly 2 is suitable for being inserted into the rubber protective sleeve that has not been opened, and the sliding seat 3 is suitable for driving the opening assembly 2 to move to open the rubber protective sleeve. The sliding seats 3 and the opening assembly 2 are each symmetrically arranged in two groups, and the two sliding seats 3 correspond one-to-one to the two groups of opening assemblies 2. The automatic drive 4 is connected to the base shell 1, and the two sliding seats 3 are movably connected to the automatic drive 4. The automatic drive 4 is suitable for driving the two sliding seats 3 to move away from each other to drive the two groups of opening assemblies 2 to an open state.

[0032] Reference Figure 1 and Figure 2 When the two sets of opening assemblies 2 are in the open position, the automatic drive 4 is activated, causing the two sets of sliding seats 3 to move away from each other, driving the corresponding opening assemblies 2 to expand the rubber protective sleeve. The expanded opening of the rubber protective sleeve is larger than the outer diameter of the catheter end. When the two sets of opening assemblies 2 are in the retracted position, the portions of the two opening assemblies 2 inserted into the rubber protective sleeve in the normal position have a clearance fit with the rubber protective sleeve. The two sets of opening assemblies 2 have the same structure. The following uses the cooperative relationship between one opening assembly 2, the sliding seat 3, and the base shell 1 as an example to illustrate.

[0033] The base shell 1 includes a first substrate 11, a second substrate 12, a bottom plate 13 and a side plate 14. The first substrate 11 and the second substrate 12 are both located on the same side of the bottom plate 13 and are arranged at intervals. The first substrate 11 and the second substrate 12 are fixedly connected to the bottom plate 13 by bolts. There are two side plates 14, which are respectively connected to the opposite ends of the bottom plate 13. The two side plates 14 extend in the same direction, and the cross-section formed by the bottom plate 13 and the two side plates 14 is "U"-shaped. The first substrate 11 and the second substrate 12 are both located between the two side plates 14, and the two side plates 14 respectively block the openings on the opposite sides of the first substrate 11 and the second substrate 12, thereby making the ends of the first substrate 11 and the second substrate 12 away from the bottom plate 13 open, and part of the support assembly 2 extends through the opening to the outside of the base shell 1 to cooperate with the rubber protective cover.

[0034] Reference Figure 2 The sliding seat 3 is located between the first base plate 11 and the second base plate 12, and the sliding seat 3 slides back and forth between the two side plates 14. Transverse movement grooves are formed on the sides of the first base plate 11 and the second base plate 12 that are close to each other. The two opposite sides of the sliding seat 3 are respectively inserted into the two transverse movement grooves, allowing the sliding seat 3 to slide stably and directionally between the two side plates 14.

[0035] Reference Figure 2 and Figure 3The opening assembly 2 includes a first sliding rod 21, a second sliding rod 22, a first opening hook 23, and a second opening hook 24. The first sliding rod 21 and the second sliding rod 22 are both slidably mounted on the sliding seat 3. When the sliding seat 3 moves, the first sliding rod 21 and the second sliding rod 22 will move synchronously with the sliding seat 3. The first sliding rod 21 and the second sliding rod 22 can slide relative to the sliding seat 3, and the first sliding rod 21 and the second sliding rod 22 can move toward or away from each other. The first opening hook 23 is mounted on the first sliding rod 21 by bolts, and the second opening hook 24 is mounted on the second sliding rod 22 by bolts. The first opening hook 23 and the second opening hook 24 both protrude from the base shell 1 through the opening of the base shell 1. The rubber protective sleeve is mounted on the two first opening hooks 23 and the two second opening hooks 24 in the retracted state. When the first sliding rod 21 and the second sliding rod 22 move away from each other, the first opening-opening hook 23 and the second opening-opening hook 24 move away from each other, thereby expanding the opening of the rubber protective sleeve.

[0036] Specifically, a first sliding groove 31 is provided on the side of the sliding seat 3 close to the first substrate 11. The first sliding groove 31 extends in a sliding direction perpendicular to the sliding seat 3, and the first sliding groove 31 completely penetrates the sliding seat 3 along its own extension direction. The first sliding rod 21 is inserted into the first sliding groove 31 and slides along the extension direction of the first sliding groove 31.

[0037] Reference Figure 2 and Figure 3 The first sliding rod 21 is integrally formed with a first bending rod on one side of the opening close to the base shell 1. The first bending rod extends gradually in an inclined direction away from the bottom plate 13 along the direction close to the other group of support components 2. The first support hook 23 is an "L"-shaped hook. The first support hook 23 is installed on the first bending rod. The first support hook 23 is in an inclined state relative to the first sliding rod 21. After the first sliding rod 21 moves, the first support hook 23 will cooperate with the second support hook 24 to drive the opening of the rubber protective sleeve from small to large. In another embodiment, the first bending rod may not be provided, but the first support hook 23 may be installed obliquely on the first sliding rod 21.

[0038] Reference Figure 2 and Figure 3 A second sliding groove 32 is provided on the side of the sliding seat 3 close to the second substrate 12. The extension direction of the second sliding groove 32 is consistent with the extension direction of the first sliding groove 31. The second sliding groove 32 also completely penetrates the sliding seat 3 along its own extension direction. The second sliding rod 22 is inserted into the second sliding groove 32 and slides along the extension direction of the second sliding groove 32.

[0039] A second bending rod is integrally formed on the side of the second sliding rod 22 near the opening of the base shell 1. The second bending rod is arranged at an angle, and the bending direction of the second bending rod is the same as that of the first bending rod. The second opening hook 24 is also an "L"-shaped hook and is installed on the second bending rod. The first opening hook 23 and the second opening hook 24 are inclined in the same direction and are parallel to each other. After the second sliding rod 22 moves, the second opening hook 24 will cooperate with the first opening hook 23 to drive the opening of the rubber protective sleeve from small to large. In another embodiment, the second bending rod can be omitted, and the second opening hook 24 can be installed at an angle on the second sliding rod 22.

[0040] After the first sliding rod 21 and the second sliding rod 22 move, the first and second bracing hooks 23 and 24 both move synchronously. Compared to moving only the first or second bracing hooks 23 or 24, moving both together improves bracing efficiency. Furthermore, when the two first and second bracing hooks 23 and 24 are retracted, they fit within the gaps in the rubber protective sleeve, allowing the rubber protective sleeve to be smoothly fitted over the two first and second bracing hooks 23 and 24.

[0041] Combine Figure 2 Reference Figure 3 and Figure 4 A first driving post 25 is integrally formed on the side of the first sliding rod 21 near the first base plate 11. The first driving post 25 protrudes from the first sliding groove 31. A first tilting driving groove 111 is defined on the side of the first base plate 11 near the first sliding rod 21. The first driving post 25 is inserted into the first tilting driving groove 111. As the sliding seat 3 moves, the first sliding rod 21 moves synchronously with the sliding seat 3 and can also slide in parallel with the sliding seat 3.

[0042] A second drive post 26 is integrally formed on the side of the second sliding rod 22 that is closest to the second base plate 12. The second drive post 26 protrudes from the second sliding groove 32. A second tilting drive groove 121 is defined on the side of the second base plate 12 that is closest to the second sliding rod 22. The second drive post 26 is inserted into the second tilting drive groove 121. As the sliding seat 3 moves, the first sliding rod 21 moves synchronously with the sliding seat 3 and can also slide in parallel with the sliding seat 3.

[0043] Combine Figure 3 Reference Figure 4 and Figure 5The projection of the first tilt drive groove 111 on the second base plate 12 and the cross-section of the second tilt drive groove 121 are shaped like a cross rotated 90 degrees clockwise. Therefore, when the first sliding rod 21 and the second sliding rod 22 move, the movement direction of the first opening hook 23 and the movement direction of the second opening hook 24 are perpendicular to each other. When the sliding seat 3 moves, the first sliding rod 21 and the second sliding rod 22 can move toward or away from each other while moving synchronously with the sliding seat 3. When the first sliding rod 21 and the second sliding rod 22 move away from each other, the two first opening hooks 23 and the two second opening hooks 24 open the rubber protective sleeve, forming a square opening. When the first sliding rod 21 and the second sliding rod 22 move toward each other, the two first opening hooks 23 and the two second opening hooks 24 are retracted.

[0044] Combine Figure 4 Reference Figure 5 and Figure 6 A driving assembly 5 is movably installed between the first substrate 11 and the second substrate 12. The two sliding seats 3 are movably connected to the driving assembly 5. The automatic driving assembly 5 is in contact with the driving assembly 5 but not connected. The automatic driving assembly 5 can drive the driving assembly 5 to move. After the driving assembly 5 moves, it will drive the two sliding seats 3 to move toward or away from each other, thereby driving the two first support hooks 23 and the two second support hooks 24 to contract or open.

[0045] The drive assembly 5 includes a drive block 51 and a drive connecting rod 52. The drive block 51 is located on the side of the sliding seat 3 close to the base plate 13 and between the two sliding seats 3. A vertical movement slot is defined on the side of the first base plate 11 and the second base plate 12 close to each other. The vertical movement slot extends perpendicularly to the direction of the horizontal movement slot. The opposite sides of the drive block 51 are inserted into the two vertical movement slots for directional movement. That is, the sliding direction of the drive block 51 is perpendicular to the sliding direction of the sliding seat 3. Two drive connecting rods 52 are provided, one on each side of the sliding seat 3. The sides of the two drive connecting rods 52 close to each other are both hingedly connected to the drive block 51, and the sides of the two drive connecting rods 52 away from each other are respectively hingedly connected to the two sliding seats 3.

[0046] Combine Figure 4 Reference Figure 5 and Figure 6 When the driving block 51 moves in the direction away from the base plate 13, the two driving connecting rods 52 will drive the two sliding seats 3 to move away from each other, thereby causing the two first support hooks 23 and the two second support hooks 24 to be in an open state; when the driving block 51 moves in the direction close to the base plate 13, the two driving connecting rods 52 will drive the two sliding seats 3 to move toward each other, thereby causing the two first support hooks 23 and the two second support hooks 24 to be in a contracted state.

[0047] In this embodiment, the automatic driving member 4 is preferably a pneumatic cylinder. The cylinder body of the automatic driving member 4 is mounted on the side of the base plate 13 facing away from the first base plate 11 and the second base plate 12. The piston rod of the automatic driving member 4 passes through the base plate 13 and abuts against the driving block 51. When the piston rod of the automatic driving member 4 extends, it pushes the driving block 51 to move away from the base plate 13.

[0048] Combine Figure 4 Reference Figure 5 and Figure 6 The driving assembly 5 also includes two return springs 53, which are respectively located on both sides of the driving block 51, and the two return springs 53 correspond one to one with the two driving connecting rods 52. One end of the return spring 53 is connected to the corresponding driving connecting rod 52; the other end extends obliquely toward the direction close to the bottom plate 13 and is connected to the second base plate 12. When the piston rod of the automatic driving component 4 retracts, the two driving connecting rods 52 will drive the driving block 51 to reset under the action of the two return springs 53. During the resetting process of the driving block 51, the two first support hooks 23 and the two second support hooks 24 are also in a contracted state. The return springs 53 can provide a certain buffering effect in the process of the two first support hooks 23 and the two second support hooks 24 contacting each other after contraction, so that the two first support hooks 23 and the two second support hooks 24 are not easily bent due to collision due to rigid contraction after contraction, affecting the next use.

[0049] Reference Figure 4 and Figure 6 A limiting post 511 is fixedly mounted on the side of the driving block 51 close to the first substrate 11. An orientation slot 112 is defined on the first substrate 11. The limiting post 511 is inserted into the orientation slot 112 and can move within the orientation slot 112 as the driving block 51 moves. An adjustment plate 15 is bolted to the side of the first substrate 11 that is substantially away from the second substrate 12. The adjustment plate 15 partially blocks the orientation slot 112 and defines a waist-shaped adjustment hole 151 extending in the same direction as the sliding seat 3. An adjustment slope 152 is defined on the side of the adjustment plate 15 close to the bottom plate 13, and the limiting post 511 abuts against the adjustment slope 152. When the opening size of the two first opening hooks 23 and the two second opening hooks 24 needs to be adjusted, the bolts can be loosened to move the adjustment plate 15. Under the action of the adjustment bevel 152, the shielding length of the directional slot 112 can be adjusted, and the moving length of the driving block 51 can be adjusted to further adjust the opening size of the two first opening hooks 23 and the two second opening hooks 24. This makes the device more widely applicable.

[0050] In order to prevent the driving block 51 from getting stuck during movement, a limiting post 511 is also fixed on the side of the driving block 51 close to the second substrate 12 , and an orientation slot 112 is also formed on the second substrate 12 .

[0051] The implementation principle of a catheter protective sleeve support device in an embodiment of the present application is: when the rubber protective sleeve is put on the end of the catheter, the two groups of support components 2 are in a contracted state, and the rubber protective sleeve is first put on the two first support hooks 23 and the two second support hooks 24. The automatic drive member 4 is then activated, pushing the drive block 51 away from the base plate 13 and driving the two drive links 52 to move. The two sliding seats 3 are then driven away from each other by the drive links 52. Since the first sliding rod 21 is located in the first sliding groove 31 and the second sliding rod 22 is located in the second sliding groove 32, when the sliding seat 3 moves, the first sliding rod 21 and the second sliding rod 22 can move synchronously with the sliding seat 3. However, while the first sliding rod 21 and the second sliding rod 22 of the same group move synchronously with the sliding seat 3, the first and second opening hooks 23 and 24 are able to move vertically away from each other due to the action of the first and second inclined driving grooves 111 and 121. Therefore, the opening of the rubber protective sleeve is square after being opened by the two first opening hooks 23 and the two second opening hooks 24. Finally, the end of the catheter is inserted into the rubber protective sleeve and the rubber protective sleeve is pushed off the two first opening hooks 23 and the two second opening hooks 24.

[0052] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A catheter protective sleeve opening device, characterized in that: The invention comprises a base shell (1), a support opening assembly (2), a sliding seat (3) and an automatic driving member (4), wherein the sliding seat (3) is slidingly connected to the inside of the base shell (1), the support opening assembly (2) is slidingly connected to the sliding seat (3), the support opening assembly (2) is suitable for being inserted into the rubber protective sleeve, the sliding seat (3) is suitable for driving the support opening assembly (2) to move so as to open the rubber protective sleeve, the sliding seat (3) and the support opening assembly (2) are symmetrically arranged in two groups, the two sliding seats (3) correspond to the two groups of the support opening assemblies (2) one by one, the automatic driving member (4) is connected to the base shell (1), the two sliding seats (3) are movably connected to the automatic driving member (4), and the automatic driving member (4) is suitable for driving the two sliding seats (3) to move in opposite directions; When the opening assembly (2) is in an open state, the automatic driving member (4) is actuated, and the two groups of sliding seats (3) move in opposite directions and drive the corresponding opening assembly (2) to move so as to open the rubber protective sleeve. The opening of the rubber protective sleeve after opening is larger than the outer diameter of the end of the catheter; When the support assembly (2) is in a contracted state, the parts of the two groups of support assemblies (2) inserted into the rubber protective sleeve in a normal state are in clearance fit with the rubber protective sleeve.

2. A catheter protective sleeve opening support device according to claim 1, characterized in that: The support assembly (2) comprises a first sliding rod (21) and a second sliding rod (22), wherein the first sliding rod (21) and the second sliding rod (22) are respectively slidably mounted on opposite sides of the sliding seat (3), and the sliding directions of the first sliding rod (21) and the second sliding rod (22) are perpendicular to the sliding direction of the sliding seat (3). When the sliding seat (3) moves, the first sliding rod (21) and the second sliding rod (22) move toward or away from each other.

3. The catheter protective sleeve opening support device according to claim 2, characterized in that: The sliding seat (3) is provided with a first sliding groove (31) and a second sliding groove (32) having the same extension direction on opposite sides, and the extension directions of the first sliding groove (31) and the second sliding groove (32) are both perpendicular to the sliding direction of the sliding seat (3). The first sliding rod (21) is inserted into the first sliding groove (31) and slides in the first sliding groove (31), and the second sliding rod (22) is inserted into the second sliding groove (32) and slides in the second sliding groove (32).

4. The catheter protective sleeve opening support device according to claim 2, characterized in that: The support assembly (2) further includes a first support hook (23) and a second support hook (24) suitable for being inserted into the rubber protective sleeve. When the two first support hooks (23) and the two second support hooks (24) are in a retracted state, they cooperate with the opening gap of the rubber protective sleeve. The first support hook (23) is obliquely mounted on the first sliding rod (21) and moves synchronously with the first sliding rod (21). The second support hook (24) is obliquely mounted on the second sliding rod (22) and moves synchronously with the second sliding rod (22). The first support hook (23) and the second support hook (24) have the same inclination direction and are parallel to each other. When the first sliding rod (21) and the second sliding rod (22) move, the moving direction of the first support hook (23) and the moving direction of the second support hook (24) are perpendicular to each other.

5. The catheter protective sleeve opening support device according to claim 4, characterized in that: A first inclined driving groove (111) is provided on a side of the base shell (1) close to the first sliding rod (21), and the first sliding rod (21) is provided with a first driving column (25). The first driving column (25) is inserted into the first inclined driving groove (111). When the sliding seat (3) moves, the first sliding rod (21) moves relative to the base shell (1) under the action of the first driving column (25) and the first inclined driving groove (111).

6. The catheter protective sleeve opening support device according to claim 5, characterized in that: A second inclined driving groove (121) is provided on a side of the base shell (1) close to the second sliding rod (22), and the second sliding rod (22) is provided with a second driving column (26). The second driving column (26) is inserted into the second inclined driving groove (121). When the sliding seat (3) moves, the second sliding rod (22) moves relative to the base shell (1) under the action of the second driving column (26) and the second inclined driving groove (121).

7. The catheter protective sleeve opening support device according to claim 6, characterized in that: The projection of the first inclined driving groove (111) on the inner wall of the second inclined driving groove (121) and the cross-section of the second inclined driving groove (121) are in the shape of a cross rotated ninety degrees clockwise, and the opening after the two first opening hooks (23) and the two second opening hooks (24) open the rubber protective sleeve is square.

8. The catheter protective sleeve opening support device according to claim 1, characterized in that: The invention also includes a driving assembly (5) movably installed in the base shell (1), the driving assembly (5) including a driving block (51) and a driving connecting rod (52), the automatic driving member (4) contacts the driving block (51) and drives the driving block (51) to move, the driving block (51) is slidingly installed in the base shell (1), two driving connecting rods (52) are provided, the two driving connecting rods (52) are respectively arranged on opposite sides of the sliding seat (3), the sides of the two driving connecting rods (52) close to each other are hingedly connected to the driving block (51), and the sides of the two driving connecting rods (52) away from each other are respectively hingedly connected to the two sliding seats (3) to drive the two sliding seats (3) to move toward or away from each other.

9. The catheter protective sleeve opening support device according to claim 8, characterized in that: The driving assembly (5) further comprises two return springs (53), one end of each of the return springs (53) being connected to the two driving connecting rods (52) respectively; and the other end of each of the return springs (53) being connected to the base shell (1). The return springs (53) are adapted to drive the driving block (51) to return to its original position so as to drive the two groups of the support assemblies (2) to a contracted state.

10. The catheter protective sleeve opening support device according to claim 8, characterized in that: The driving block (51) is fixedly provided with a limiting column (511), the base shell (1) is provided with an orientation groove (112), the limiting column (511) is inserted into the orientation groove (112) and slides in the orientation groove (112), the base shell (1) is slidably connected with an adjustment plate (15), the adjustment plate (15) is suitable for adjusting and limiting the moving distance of the limiting column (511), and when the support assembly (2) is in an open state, the limiting column (511) abuts against the adjustment plate (15).

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