Opening opening device for catheter protective sleeve

Abstract

The invention 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 support device. Background Art

[0002] Before leaving the factory, a rubber protective sleeve is put on the round end of the catheter to protect and seal the end of the catheter. In order to prevent the rubber protective sleeve from falling off after being put on the catheter and to improve the sealing effect of the rubber protective sleeve on the catheter end, the inner diameter of the rubber protective sleeve is usually much smaller than the outer diameter of the catheter end, so that the catheter can be inserted into the rubber protective sleeve with 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 end of the catheter 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 end of the catheter, the staff will completely insert the end of the catheter into the rubber protective sleeve, and then release the rubber protective sleeve without pulling it. At this time, the rubber protective sleeve will be tightly wrapped around the end of the catheter under the action of 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 cover at the end of a catheter, the present application provides a catheter protective cover support device.

[0005] The present application provides a catheter protective sleeve support device, which adopts the following technical solution: 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 slidingly connected to the inside of the base shell, the opening assembly is slidingly connected to the sliding seat, the opening assembly is suitable for being inserted into a rubber protective sleeve in a normal state, 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 by 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 in opposite directions; When the opening assembly is in an open state, the automatic driving member is actuated, and the two groups of sliding seats move in opposite directions and drive the corresponding opening assembly to move to open the rubber protective sleeve, and the opening of the rubber protective sleeve after opening is larger than the outer diameter of the end of the catheter; When the opening component is in the contracted state, the portion of the opening component inserted into the rubber protective sleeve in the normal state is in clearance fit with the rubber protective sleeve.

[0006] 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.

[0007] 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 in the first sliding groove and slides in the first sliding groove, and the second sliding rod is inserted in the second sliding groove and slides in the second sliding groove.

[0008] Optionally, the brace assembly also includes a first brace hook and a second brace hook suitable for being inserted into the rubber protective cover, the first brace hook is obliquely installed on the first sliding rod and moves synchronously with the first sliding rod, the second brace hook is obliquely installed on the second sliding rod and moves synchronously with the second sliding rod, the inclination directions of the first brace hook and the second brace hook are consistent and parallel to each other, and when the first sliding rod and the second sliding rod move, the moving direction of the first brace hook is perpendicular to the moving direction of the second brace hook.

[0009] 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 under the action of the first driving column and the first inclined driving groove.

[0010] 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 under the action of the second driving column and the second inclined driving groove.

[0011] 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 a "cross" rotated 90 degrees clockwise, and the opening of the rubber protective cover after the two first support hooks and the two second support hooks are opened is a square.

[0012] 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 slidably installed in the base shell, two driving connecting rods are provided, the two driving connecting rods are respectively arranged on two opposite sides of the sliding seat, the sides of the two driving connecting rods close to each other are hingedly connected to the driving block, and the sides of the two driving connecting rods 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.

[0013] Optionally, the driving assembly further comprises two reset springs, one end of the two reset springs being respectively connected to the two driving connecting rods; and 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 be in a contracted state.

[0014] Optionally, the driving block is fixedly provided 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, the adjustment plate is suitable for adjusting and limiting the moving distance of the limit column, and when the support assembly is in an open state, the limit column abuts against the adjustment plate.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: The rubber protective sleeve is sleeved on the two first opening hooks and the two second opening hooks, and the automatic driving member 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, and then the end of the catheter can be directly and smoothly inserted into the rubber protective sleeve, and then the rubber protective sleeve can be pushed down from the device through the catheter so that the rubber protective sleeve can be sleeved on the catheter and tightly wrapped around the catheter. The above structure is easy to operate and relatively automated, which can greatly improve the production and processing efficiency; Usually, the catheter is a circular tube, so the two first opening hooks and the two second opening hooks can make the opening of the rubber protective sleeve after opening into a square shape through the action of the first inclined driving groove and the second inclined driving groove during the movement. 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 it smoother for the catheter to be inserted into the rubber protective sleeve through the opening, thereby improving production efficiency; The overall structure is relatively compact, and different structures are linked to each other. The two first support hooks and the two second support 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. 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 so that the first opening hook and the second opening hook can complete the opening action, which has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the contracted state of the support assembly in the embodiment of the present application.

[0017] Figure 2 It 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.

[0018] 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.

[0019] Figure 4 It is a diagram of the coordination structure of the first substrate and the support opening assembly in the embodiment of the present application.

[0020] Figure 5 It 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.

[0021] Figure 6 It is an exploded view of the base shell in the open state of the support assembly in the embodiment of the present application.

[0022] Explanation of the reference numerals: 1. base shell; 11. first substrate; 111. first inclined driving groove; 112. orientation groove; 12. second substrate; 121. second inclined driving 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 driving column; 26. second driving column; 3. sliding seat; 31. first sliding groove; 32. second sliding groove; 4. automatic driving member; 5. driving assembly; 51. driving block; 511. limiting column; 52. driving connecting rod; 53. reset spring. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-6 This application is described in further detail.

[0024] The present application embodiment discloses a catheter protective sleeve opening support device. Figure 1 and Figure 2The catheter protective sleeve opening device comprises a base shell 1, an opening assembly 2, a sliding seat 3 and an automatic driving member 4. The sliding seat 3 is slidingly connected to the inside of the base shell 1, and the opening assembly 2 is slidingly connected to the sliding seat 3. The opening assembly 2 is suitable for being inserted into the rubber protective sleeve in a normal state, and the sliding seat 3 is suitable for driving the opening assembly 2 to move so as to open the rubber protective sleeve. The sliding seat 3 and the opening assembly 2 are symmetrically arranged in two groups, and the two sliding seats 3 correspond to the two groups of opening assemblies 2 one by one. The automatic driving member 4 is connected to the base shell 1, and the two sliding seats 3 are movably connected to the automatic driving member 4. The automatic driving member 4 is suitable for driving the two sliding seats 3 to move back to each other to drive the two groups of opening assemblies 2 to be in an open state.

[0025] Reference Figure 1 and Figure 2 , wherein, when the two groups of opening components 2 are in the open state, the automatic driving member 4 is actuated, the two groups of sliding seats 3 move in opposite directions and drive the corresponding opening components 2 to move to open the rubber protective sleeve, and the opening of the rubber protective sleeve after opening is larger than the outer diameter of the end of the catheter. When the two groups of opening components 2 are in the contracted state, the parts of the two groups of opening components 2 inserted in the rubber protective sleeve in the normal state are matched with the gap of the rubber protective sleeve. The structures of the two groups of opening components 2 are the same, and the following is an example of the matching relationship between one group of opening components 2, the sliding seat 3 and the base shell 1.

[0026] 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. Two side plates 14 are provided, and the two side plates 14 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.

[0027] Reference Figure 2 The sliding seat 3 is located between the first substrate 11 and the second substrate 12, and the sliding seat 3 slides back and forth between the two side plates 14. The first substrate 11 and the second substrate 12 are both provided with transverse movement grooves on the sides close to each other, and the two opposite sides of the sliding seat 3 are respectively inserted into the two transverse movement grooves, so that the sliding seat 3 can stably slide in a directional manner between the two side plates 14.

[0028] 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, and 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 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 from the opening of the base shell 1, and the rubber protective sleeve is sleeved on the two first opening hooks 23 and the two second opening hooks 24 in the contracted 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.

[0029] Specifically, a first sliding groove 31 is opened on one 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.

[0030] Reference Figure 2 and Figure 3 A first bending rod is integrally formed on one side of the first sliding rod 21 close to the opening of the base shell 1. The first bending rod extends obliquely along the direction approaching the other group of support components 2 and gradually away from the bottom plate 13. 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.

[0031] Reference Figure 2 and Figure 3 A second sliding groove 32 is provided on one 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.

[0032] A second bending rod is integrally formed on one side of the second sliding rod 22 near the opening of the base shell 1. The second bending rod is tilted, and the bending direction of the second bending rod is consistent with the bending direction of the first bending rod. The second opening hook 24 is also an "L"-shaped hook. The second opening hook 24 is installed on the second bending rod. The first opening hook 23 and the second opening hook 24 have the same tilt 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 may not be provided, but the second opening hook 24 may be tilted and installed on the second sliding rod 22.

[0033] After the first sliding rod 21 and the second sliding rod 22 move, the first opening hook 23 and the second opening hook 24 both move synchronously. Compared with only the first opening hook 23 or only the second opening hook 24 moving, the first opening hook 23 and the second opening hook 24 moving together can improve the opening efficiency. In addition, when the two first opening hooks 23 and the two second opening hooks 24 are in the contracted state, they match the opening gap of the rubber protective cover, so that the rubber protective cover can be smoothly sleeved on the two first opening hooks 23 and the two second opening hooks 24.

[0034] Combination Figure 2 Reference Figure 3 and Figure 4 A first driving column 25 is integrally formed on one side of the first sliding rod 21 close to the first substrate 11, and the first driving column 25 protrudes from the first sliding groove 31. A first inclined driving groove 111 is provided on one side of the first substrate 11 close to the first sliding rod 21, and the first driving column 25 is inserted into the first inclined driving groove 111, so that when the sliding seat 3 moves, the first sliding rod 21 can move synchronously with the sliding seat 3 and can also slide equivalently to the sliding seat 3.

[0035] A second driving column 26 is integrally formed on one side of the second sliding rod 22 close to the second base plate 12, and the second driving column 26 protrudes from the second sliding groove 32. A second tilting driving groove 121 is provided on one side of the second base plate 12 close to the second sliding rod 22, and the second driving column 26 is inserted into the second tilting driving groove 121, so that when the sliding seat 3 moves, the first sliding rod 21 can move synchronously with the sliding seat 3 and can also slide equivalently to the sliding seat 3.

[0036] Combination Figure 3 Reference Figure 4 and Figure 5, wherein the projection of the first tilt driving groove 111 on the second substrate 12 and the cross section of the second tilt driving groove 121 are in the shape of a "cross" rotated 90 degrees clockwise, so when the first sliding rod 21 and the second sliding rod 22 move, the moving direction of the first opening hook 23 and the moving 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 are driven to open the opening of the rubber protective sleeve to a square; 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 driven to be in a contracted state.

[0037] Combination 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, and 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.

[0038] The driving assembly 5 includes a driving block 51 and a driving connecting rod 52. The driving block 51 is located on the side of the sliding seat 3 close to the bottom plate 13, and the driving block 51 is located between the two sliding seats 3. The sides of the first substrate 11 and the second substrate 12 close to each other are both provided with vertical moving grooves, and the extension direction of the vertical moving groove is perpendicular to the extension direction of the horizontal moving groove. The opposite sides of the driving block 51 are respectively inserted into the two vertical moving grooves for directional movement, that is, the sliding direction of the driving block 51 is perpendicular to the sliding direction of the sliding seat 3. Two driving connecting rods 52 are provided, and the two driving connecting rods 52 are respectively arranged on the opposite sides of the sliding seat 3. The sides of the two driving connecting rods 52 close to each other are both 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.

[0039] Combination Figure 4 Reference Figure 5 and Figure 6 When the driving block 51 moves in a direction away from the bottom plate 13, the two driving connecting rods 52 will drive the two sliding seats 3 to move away from each other, thereby making the two first support hooks 23 and the two second support hooks 24 in an open state; when the driving block 51 moves in a direction close to the bottom plate 13, the two driving connecting rods 52 will drive the two sliding seats 3 to move toward each other, thereby making the two first support hooks 23 and the two second support hooks 24 in a contracted state.

[0040] In this embodiment, the automatic driving member 4 is preferably a cylinder, and the cylinder body of the automatic driving member 4 is installed on the side of the bottom plate 13 away from the first base plate 11 and the second base plate 12, and the piston rod of the automatic driving member 4 passes through the bottom plate 13 and abuts against the driving block 51. When the piston rod of the automatic driving member 4 is extended, it pushes the driving block 51 to move in a direction away from the bottom plate 13.

[0041] Combination 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 to the two driving connecting rods 52 one by one. 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 member 4 is retracted, the two driving connecting rods 52 will drive the driving block 51 to reset under the action of the two return springs 53. In the process of resetting the driving block 51, the two first support hooks 23 and the two second support hooks 24 are also in a contracted state, and the return spring 53 can make the two first support hooks 23 and the two second support hooks 24 have a certain buffering effect in the process of abutting each other after contraction, so that the two first support hooks 23 and the two second support hooks 24 are not easy to bend due to collision due to rigid contraction after contraction, which affects the next use.

[0042] Reference Figure 4 and Figure 6 A limiting column 511 is fixedly provided on the side of the driving block 51 close to the first substrate 11. An orientation slot 112 is provided on the first substrate 11. The limiting column 511 is inserted into the orientation slot 112 and can move in the orientation slot 112 as the driving block 51 moves. An adjustment plate 15 is installed on the side substantially away from the second substrate 12 through bolts. The adjustment plate 15 blocks part of the orientation slot 112. A waist-shaped adjustment hole 151 is provided on the adjustment plate 15. The extension direction of the waist-shaped adjustment hole 151 is consistent with the sliding direction of the sliding seat 3. An adjustment inclined surface 152 is provided on the side of the adjustment plate 15 close to the bottom plate 13. The limiting column 511 abuts against the adjustment inclined surface 152. When the 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, and the shielding length of the directional slot 112 can be adjusted under the action of the adjustment slope 152, and the moving length of the driving block 51 can be adjusted, thereby adjusting the size of the two first opening hooks 23 and the two second opening hooks 24. This makes the device more widely used.

[0043] In order to prevent the driving block 51 from getting stuck during movement, a limiting column 511 is also fixed on the side of the driving block 51 close to the second substrate 12 , and an orientation groove 112 is also formed on the second substrate 12 .

[0044] The implementation principle of a catheter protective sleeve opening 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 opening components 2 are in a contracted state, and the rubber protective sleeve is first put on the two first opening hooks 23 and the two second opening hooks 24. Then, the automatic driving member 4 is started, and the driving member is started to push the driving block 51 to move away from the bottom plate 13 and drive the two driving connecting rods 52 to move; the two sliding seats 3 will be driven away from each other by the driving connecting rods 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, but when the first sliding rod 21 and the second sliding rod 22 of the same group move synchronously with the sliding seat 3, the first opening hook 23 and the second opening hook 24 can move away from each other in the vertical direction through the action of the first inclined driving groove 111 and the second inclined driving groove 121, so the opening of the rubber protective sleeve is a square shape 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 down from the two first opening hooks 23 and the two second opening hooks 24.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A catheter protective sleeve opening device, characterized in that: The invention comprises a base shell (1), a mouth-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 mouth-opening assembly (2) is slidingly connected to the sliding seat (3), the mouth-opening assembly (2) is suitable for being inserted into a rubber protective sleeve in a normal state, the sliding seat (3) is suitable for driving the mouth-opening assembly (2) to move so as to open the rubber protective sleeve, the sliding seat (3) and the mouth-opening assembly (2) are both symmetrically arranged in two groups, the two sliding seats (3) correspond to the two groups of mouth-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 away from each other; When the opening assembly (2) is in an open state, the automatic driving member (4) is actuated, 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, and the opening of the rubber protective sleeve after opening is larger than the outer diameter of the end of the catheter; When the brace assembly (2) is in a contracted state, the parts of the two sets of brace assemblies (2) inserted into the rubber protective sleeve in a normal state are in gap fit with the rubber protective sleeve.

2. A catheter protective sleeve opening device according to claim 1, characterized in that: The opening 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 both 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 towards or away from each other.

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

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

5. A catheter protective sleeve opening device according to claim 4, characterized in that: A first inclined driving groove (111) is provided on one 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 under the action of the first driving column (25) and the first inclined driving groove (111).

6. A catheter protective sleeve opening device according to claim 5, characterized in that: A second inclined driving groove (121) is provided on one 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 under the action of the second driving column (26) and the second inclined driving groove (121).

7. A catheter protective sleeve opening 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 90 degrees clockwise, and the opening of the rubber protective sleeve after being opened by the two first opening hooks (23) and the two second opening hooks (24) is square.

8. The catheter protective sleeve opening device according to claim 1, characterized in that: The invention also comprises a driving assembly (5) movably mounted in the base shell (1), the driving assembly (5) comprising 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 slidably mounted in the base shell (1), two driving connecting rods (52) are provided, the two driving connecting rods (52) are arranged on opposite sides of the sliding seat (3), the sides of the two driving connecting rods (52) close to each other are both 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 towards or away from each other.

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

10. A catheter protective sleeve opening 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 opening assembly (2) is in an open state, the limiting column (511) abuts against the adjustment plate (15).

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