Cutting assistive device for silicone pad of catheter sheath

Abstract

The utility model provides a catheter sheath silica gel pad cutting assistive device capable of accurately cutting notches on the front and back sides of a silica gel pad, the front side of a positioning plate is provided with a positioning groove used for placing the silica gel pad, the shape of the positioning groove is matched with that of the silica gel pad, and the positioning groove and the silica gel pad are in limiting fit. A second kerf is formed in the position, corresponding to the groove bottom of the positioning groove, of the back plate face of the positioning plate, and the first kerf and the second kerf are arranged in an included angle mode. During cutting, the silica gel pad is placed in the positioning groove, the position of the silica gel pad is limited due to the limiting effect of the positioning groove, then the cutter transversely penetrates through the two ends of the positioning groove along the first cutting seam, and a first notch penetrating through the radial direction is cut in the front face of the silica gel pad; and then the cutter cuts a second notch on the back surface of the silica gel pad along the second kerf from the back surface of the positioning plate, and the silica gel pad is still in a limiting state in the process, so that the accuracy of the positions of the first notch and the second notch is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of catheter sheath manufacturing, in particular to a catheter sheath silica gel pad cutting auxiliary tool. BACKGROUND

[0002] Most catheter sheaths are provided with a hemostatic valve, and a silica gel pad made of medical silica gel material is used for sealing and pressure maintaining inside the hemostatic valve, so as to prevent the hemostatic valve from leaking blood when the catheter sheath is inserted into the human body blood vessel. In order to facilitate the insertion of the guide wire / catheter, it is necessary to cut a notch on the silica gel pad to form a channel for the guide wire / catheter to pass through. Figure 1 、 Figure 2 The front and back surfaces of the silica gel pad are shown in the figure. The first notch 1 on the front surface of the silica gel pad penetrates the silica gel pad in the radial direction, but the depth does not penetrate the thickness of the silica gel pad. The second notch 2 on the back surface of the silica gel pad does not penetrate the silica gel pad in length, and the depth also does not penetrate the thickness of the silica gel pad, but the first notch 1 and the second notch 2 penetrate at the center position. For this special structure of the silica gel pad, it is difficult to accurately cut the notches on both surfaces. SUMMARY

[0003] The utility model discloses a kind of catheter sheath silica gel pad cutting auxiliary tools that can accurately cut notch on the front and back surface of silica gel pad.

[0004] In order to achieve the above object, the utility model adopts the technical scheme that a kind of catheter sheath silica gel pad cutting auxiliary tool, including positioning plate, the front surface of positioning plate is equipped with the positioning slot for placing silica gel pad, the shape of positioning slot is consistent with the shape of silica gel pad and constitutes limit cooperation, the front surface of the positioning plate is provided with first cut seam, first cut seam penetrates both ends of positioning slot, the back surface of positioning plate is equipped with second cut seam at the corresponding position of the groove bottom of positioning slot, first cut seam and second cut seam are arranged in the form of angle.

[0005] Further, the depth of the first cut seam is less than the depth of the positioning slot, the length of the second cut seam is less than the width of the positioning slot, and the depth of the second cut seam is equal to the thickness of the back surface of the positioning plate to the groove bottom of the positioning slot.

[0006] Further, the front surface of the positioning plate is provided with a plurality of positioning slots, the shapes of the positioning slots are the same or different, the first cut seam extends from one end of the positioning plate to the other end, and the length direction of the first cut seam is consistent with the arrangement direction of the plurality of positioning slots.

[0007] Further, the positioning slot includes a circular groove and a special-shaped groove, the profile of the special-shaped groove cooperates with the profile of the silica gel pad to limit the movement of the silica gel pad in the direction parallel to the surface of the positioning plate, and the groove bottom of the circular groove is provided with a positioning column protruding, and the positioning column is provided with at least two.

[0008] Further, the two sides of the circular groove are provided with extension grooves, and one side of the special-shaped groove is provided with an extension groove.

[0009] Further, one end of the second cutting seam is provided with a through hole, the depth of the through hole is equal to the thickness from the back plate surface of the positioning plate to the bottom of the positioning groove, and the cross section of the through hole is in the shape of a sector.

[0010] Further, the auxiliary tool further comprises a cover plate, the plate surface of the cover plate is provided with a pressing block, a plurality of pressing blocks are arranged in one-to-one correspondence with the positioning grooves, and the pressing blocks press on the silica gel pad to press the silica gel pad against the bottom of the positioning groove.

[0011] The depth of the positioning groove is greater than the thickness of the silica gel pad, and the sum of the thickness of the silica gel pad and the thickness of the pressing block is consistent with the depth of the positioning groove.

[0012] Further, the side edge of the positioning plate is further provided with a groove.

[0013] In the above scheme, when cutting, the silica gel pad is placed in the positioning groove, and due to the limiting effect of the positioning groove, the position of the silica gel pad is limited, then the cutter crosses the two ends of the positioning groove along the first cutting seam, and cuts the first cut in the radial direction on the front surface of the silica gel pad, then the cutter cuts the second cut on the back surface of the silica gel pad along the second cutting seam from the back surface of the positioning plate, and in this process, the silica gel pad is still in the limiting state, so as to ensure the accuracy of the positions of the first cut and the second cut. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a front view of the silica gel pad;

[0015] Figure 2 is a back view of the silica gel pad;

[0016] Figure 3 is a schematic view of the overall structure of the auxiliary tool;

[0017] Figure 4 is a front view of the positioning plate;

[0018] Figure 5 is a back view of the positioning plate;

[0019] Figure 6 is a schematic view of the structure of the cover plate. DETAILED DESCRIPTION

[0020] The following will be combined Figures 3-6 The utility model will be further discussed in detail.

[0021] The utility model provides a kind of cutting auxiliary tool for catheter sheath silica gel pad, including positioning plate 10, the front surface of positioning plate 10 is equipped with the positioning groove 11 for placing silica gel pad A, the shape of positioning groove 11 is consistent with silica gel pad A shape and constitutes limit cooperation, the first cutting seam 12 of the front plate of positioning plate 10 is provided with, the first cutting seam 12 penetrates the both ends of positioning groove 11, the second cutting seam 13 is opened in the corresponding position of the groove bottom of positioning groove 11 in the back plate of positioning plate 10, and the first cutting seam 12 and the second cutting seam 13 are arranged in the form of angle.In cutting, first, silica gel pad A is placed into positioning groove 11, due to the limiting effect of positioning groove 11, the position of silica gel pad A is limited, then cutter traverses the both ends of positioning groove 11 along the first cutting seam 12, to cut out the first incision 1 of through radial direction in the front surface of silica gel pad A, then cutter is cut out the second incision 2 in the back surface of silica gel pad A from the back of positioning plate 10 along the second cutting seam 13, and silica gel pad A is still in the limited state in the two cutting processes, to ensure the accuracy of the position of first incision 1 and second incision 2.

[0022] As the preferred scheme of the utility model, the depth of the first cutting seam 12 is less than the depth of the positioning groove 11, the length of the second cutting seam 13 is less than the width of the positioning groove 11, and the depth of the second cutting seam 13 is equal to the thickness from the back plate of the positioning plate 10 to the groove bottom of the positioning groove 11.In this way, the first incision 1 cut out is through silica gel pad A in radial direction, but the depth does not penetrate the thickness of silica gel pad A, and the length of the second incision 2 on the reverse side of silica gel pad A does not penetrate silica gel pad A, and the depth also does not penetrate the thickness of silica gel pad A, but first incision 1 and second incision 2 penetrate at the central position, facilitate the insertion of guide wire / catheter, and the sealing effect is good;In addition, this silica gel pad A will not tear in advance without additional force, and can easily tear under the condition of additional force, and is very suitable for tearable sheath tube.

[0023] In order to improve cutting efficiency, the front surface of the positioning plate 10 is provided with a plurality of positioning grooves 11, the shapes of the positioning grooves 11 are same or different, and the first cutting seam 12 extends from one end of the positioning plate 10 to the other end, and the length direction of the first cutting seam 12 is consistent with the arrangement direction of the plurality of positioning grooves 11.That is to say, a plurality of same type or different type silica gel pads A can be cut at one time, and the cutter can achieve the purpose along the length direction of the first cutting seam 12 in cutting.

[0024] In order to further improve the cutting efficiency, the positioning groove 11 includes a circular groove 11a and a special-shaped groove 11b, the profile of the special-shaped groove 11b cooperates with the profile of the silica gel pad A to limit the movement of the silica gel pad A in the direction parallel to the plate surface of the positioning plate 10, and the groove bottom of the circular groove 11a is provided with a positioning column 11c, and the positioning column 11c is provided with at least two. That is, different types of silica gel pads A can be cut at the same time. For regular circular silica gel pads A, the silica gel pad A is placed in the circular groove 11a and rotates, so the positioning column 11c needs to be matched with the positioning hole on the silica gel pad A to prevent rotation. For special-shaped silica gel pads A, the profile of the special-shaped groove 11b can limit the silica gel pad A, so it is no longer necessary to set the positioning column 11c.

[0025] If the shape profile of the positioning groove 11 is exactly the same as the shape profile of the silica gel pad A, the silica gel pad A will be difficult to take and place, so the two sides of the circular groove 11a are provided with an extension groove 11d, and one side of the special-shaped groove 11b is provided with an extension groove 11d. The extension groove 11d is used to facilitate the insertion of fingers to take and place the silica gel pad A.

[0026] When cutting the second cut 2, a position for the cutter to be lowered is needed, so one end of the second cut 13 is provided with a through hole 14, the depth of the through hole 14 is equal to the thickness from the back plate surface of the positioning plate 10 to the groove bottom of the positioning groove 11, and the cross section of the through hole 14 is fan-shaped, so that the cutter can be lowered to the appropriate depth from the position of the through hole 14, and then moved along the second cut 13 to form the second cut 2.

[0027] After the first cut 1 completes the cutting task, the positioning plate 10 needs to be turned over so that the back plate surface faces up to cut the second cut 2. In this process, in order to prevent the silica gel pad A from falling off from the positioning groove 11, the auxiliary tool further includes a cover plate 20, the plate surface of the cover plate 20 is provided with a pressing block 21, and the pressing block 21 is provided with a plurality of corresponding positioning grooves 11. The pressing block 21 presses the silica gel pad A to press the silica gel pad A tightly on the groove bottom of the positioning groove 11. In this way, the silica gel pad A is limited in all directions, on the one hand, the silica gel pad A cannot fall off from the positioning groove 11, and the front and back surfaces of the silica gel pad A can be cut; on the other hand, the position of the silica gel pad A is accurate, the position of the cut on the cut silica gel pad A is accurate, and the consistency is high.

[0028] In order to prevent the pressing block 21 from deforming the silica gel pad A when pressing the silica gel pad A, the depth of the positioning groove 11 is greater than the thickness of the silica gel pad A, and the sum of the thickness of the silica gel pad A and the thickness of the pressing block 21 is consistent with the depth of the positioning groove 11. In this way, the silica gel pad A will not deform greatly, and the accuracy of the position of the second cut 2 is ensured.

[0029] In order to facilitate the taking and placing of the positioning plate 10, the side edge of the positioning plate 10 is further provided with a recess 15.

Claims

1. A catheter sheath silica gel pad cutting aid, comprising a positioning plate (10), the front surface of the positioning plate (10) is provided with a positioning groove (11) for placing a silica gel pad (A), the shape of the positioning groove (11) is consistent with that of the silica gel pad (A) and constitutes a limiting fit, characterized in that: The front surface of the positioning plate (10) is provided with a first cut (12), the first cut (12) penetrates through both ends of the positioning groove (11), the back surface of the positioning plate (10) is provided with a second cut (13) at the corresponding position of the groove bottom of the positioning groove (11), and the first cut (12) and the second cut (13) are arranged at an angle.

2. The catheter sheath silicone pad cutting aid of claim 1, wherein: The depth of the first cut (12) is less than the depth of the positioning groove (11), the length of the second cut (13) is less than the width of the positioning groove (11), and the depth of the second cut (13) is equal to the thickness of the back surface of the positioning plate (10) to the groove bottom of the positioning groove (11).

3. The catheter sheath silicone pad cutting aid of claim 1, wherein: The front surface of the positioning plate (10) is provided with a plurality of positioning grooves (11), the shapes of the positioning grooves (11) are the same or different, the first cut (12) extends from one end of the positioning plate (10) to the other end, and the length direction of the first cut (12) is consistent with the arrangement direction of the plurality of positioning grooves (11).

4. The catheter sheath silicone pad cutting aid of claim 3, wherein: The positioning groove (11) includes a circular groove (11a) and a special-shaped groove (11b), the contour of the special-shaped groove (11b) cooperates with the contour of the silica gel pad (A) to limit the movement of the silica gel pad (A) in the direction parallel to the surface of the positioning plate (10), the circular groove (11a) is provided with a positioning column (11c) at the groove bottom, and the positioning column (11c) is provided with at least two.

5. The catheter sheath silicone pad cutting aid of claim 3, wherein: The two sides of the circular groove (11a) are provided with an extension groove (11d), and one side of the special-shaped groove (11b) is provided with an extension groove (11d).

6. The catheter sheath silicone pad cutting aid of claim 3, wherein: One end of the second cut (13) is provided with a through hole (14), the depth of the through hole (14) is equal to the thickness of the back surface of the positioning plate (10) to the groove bottom of the positioning groove (11), and the cross section of the through hole (14) is a sector.

7. The catheter sheath silicone pad cutting aid of claim 1, wherein: The auxiliary tool further comprises a cover plate (20), the surface of the cover plate (20) is provided with a pressing block (21), the pressing block (21) is provided with a plurality of corresponding positioning grooves (11), and the pressing block (21) is pressed on the silica gel pad (A) to press the silica gel pad (A) tightly on the groove bottom of the positioning groove (11).

8. The catheter sheath silicone pad cutting aid of claim 7, wherein: The depth of the positioning groove (11) is greater than the thickness of the silica gel pad (A), the sum of the thickness of the silica gel pad (A) and the thickness of the pressing block (21) is consistent with the depth of the positioning groove (11).

9. The catheter sheath silicone pad cutting aid of claim 1, wherein: The side edge of the positioning plate (10) is further provided with a groove (15).

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