Catheter drilling equipment

Abstract

The present application discloses a catheter punching device, which is used to make a hole at an appropriate position of a catheter. The catheter punching device includes: a base, the base includes a catheter support part, and the catheter support part is provided with a catheter receiving groove for receiving the catheter; a catheter clamping device, the catheter clamping device includes a second driving source and a clamping member, and the clamping member can approach / move away from the catheter support part under the drive of the second driving source to cooperate with the catheter support part to clamp or release the catheter; a punching device, the punching device includes a first driving source and a punching needle assembly, wherein: the first driving source is fixedly mounted on the base, and the motion output end of the first driving source is transmission-connected to the punching needle assembly to drive the punching needle assembly to move in a direction perpendicular to the extension of the catheter receiving groove. The catheter punching device can meet the needs of accurate punching of the catheter.

Description

Technical Field

[0001] The present application relates to the technical field of perforating devices, and in particular to a catheter perforating device. Background Art

[0002] Medical catheters, such as balloon catheters used in interventional treatment, are common medical devices used directly on the human body. Punching operations are usually required on such catheters. For example, when using balloon catheters for interventional treatment, the inflated balloon needs to radially expand the blood vessels with stenotic lesions. Therefore, during the period of balloon filling and expansion, the blood vessels will be blocked by the balloon. Long-term blood vessel blockage will have adverse effects on patients, such as myocardial ischemia and myocardial infarction, and insufficient balloon expansion time may cause insufficient diffusion of drugs carried outside the balloon to the vascular lesions. Therefore, some balloon catheters will have perfusion holes on the catheters at both ends of the balloon to temporarily guide the patient's blood from one side of the balloon to the other side to offset the balloon's blocking effect on the blood vessels.

[0003] When processing the perfusion holes on the balloon catheter, the commonly used punching devices are mechanical drills, etching punching equipment, laser punching equipment, etc. Most of these devices are simply miniaturized general equipment and used directly, which is difficult to meet the needs of accurate punching on medical catheters. Summary of the invention

[0004] The present application provides a catheter punching device, which can meet the needs of precise catheter punching.

[0005] To achieve the above-mentioned purpose, the present application provides a catheter punching device for opening a hole at an appropriate position of a catheter, the catheter punching device comprising: a base, the base comprising a catheter supporting portion, the catheter supporting portion being provided with a catheter accommodating groove for accommodating the catheter; a catheter clamping device, the catheter clamping device comprising a second driving source and a clamping member, the clamping member being able to approach / move away from the catheter supporting portion under the drive of the second driving source to cooperate with the catheter supporting portion to clamp or release the catheter; a punching device, the punching device comprising a first driving source and a punching needle assembly, wherein: the first driving source is fixedly mounted on the base, and the motion output end of the first driving source is transmission-connected to the punching needle assembly to drive the punching needle assembly to move in a direction perpendicular to the extension of the catheter accommodating groove.

[0006] According to some embodiments of the present application, the punching device also includes a guide slider, and the punch needle assembly is fixedly mounted on the guide slider; the base also includes a seat body portion, and the seat body portion is provided with a guide groove extending along the moving direction of the punch needle assembly, and the lower end of the guide slider is slidably arranged in the guide groove.

[0007] According to some embodiments of the present application, one end of the guide sliding block extending into the guide groove is provided with a first inclined surface inclined from high to low; the punching device also includes a height adjustment assembly for adjusting the punch needle assembly relative to the catheter, the height adjustment assembly includes an adjusting screw and an adjusting pad, the adjusting screw can drive the adjusting pad to move in a direction perpendicular to the extension of the guide groove, so that the adjusting pad is supported at different heights of the first inclined surface.

[0008] According to some embodiments of the present application, a second inclined surface is provided on the top of the adjusting pad, and the adjusting pad is supported and cooperated with the first inclined surface through the second inclined surface.

[0009] According to some embodiments of the present application, an adjustment screw hole is provided on the base and passes through from the outer side surface to the guide groove. One end of the adjustment screw is connected to the adjustment pad, and the other end is passed through the adjustment screw hole.

[0010] According to some embodiments of the present application, the punch needle assembly includes a punch needle, a needle seat and a punch needle fixing member, wherein: the needle seat is fixedly mounted on the guide slider, a plurality of mounting positions are arranged on the needle seat, each mounting position corresponds to a punch needle, all of the punch needles are relatively fixed to the needle seat through the punch needle fixing member, and the tip of the punch needle extends beyond the end face of the guide slider.

[0011] According to some embodiments of the present application, a first avoidance guide groove extending along the direction in which the guide slider slides in the guide groove is provided on the catheter supporting portion; a second avoidance guide groove is provided at a corresponding position of the clamping member, and in a docked state, the first avoidance guide groove and the second avoidance guide groove can be combined to form an avoidance cavity for accommodating the punch needle to pass through.

[0012] According to some embodiments of the present application, the avoidance cavity extends through the catheter accommodating groove.

[0013] According to some embodiments of the present application, the catheter perforating device also includes a fixed support fixedly connected relative to the base, the fixed support includes a clamping member guide portion, and the clamping member guide portion is provided with a guide hole for slidingly guiding the clamping member.

[0014] According to some embodiments of the present application, a catheter clamping groove is provided at the bottom of the clamping member, and in the docking state, the catheter clamping groove can be matched with the catheter accommodating groove to form a clamping groove adapted to the shape of the outer tube wall of the catheter.

[0015] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0016] The second driving source in the catheter clamping device drives the clamping member to move toward the catheter supporting portion, and the catheter to be punched can be clamped and fixed in the catheter receiving groove. Afterwards, the first driving source drives the punching needle assembly to move in a direction perpendicular to the extension of the catheter receiving groove, and the punching needle assembly can be used to punch a hole in the clamped and fixed catheter.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a catheter perforating device according to an embodiment of the present application;

[0019] Figure 2 yes Figure 1 A schematic diagram of the structure of the base portion of the catheter punching device shown;

[0020] Figure 3 yes Figure 1 A schematic diagram of the assembly structure of the punching device and the base in the catheter punching device shown;

[0021] Figure 4 yes Figure 3 An enlarged view of part A of the assembly structure shown in the figure shows the relative matching relationship between the punch needle and the relevant part on the catheter support part;

[0022] Figure 5 yes Figure 3 Another perspective view of the assembly structure shown;

[0023] Figure 6 yes Figure 1 A schematic diagram of the structure of a punch assembly in a catheter punching device shown;

[0024] Figure 7 yes Figure 1 A partial structural schematic diagram of a punching device in the catheter punching device shown in the figure shows the assembly structure of the guide slider and the height adjustment component;

[0025] Figure 8 yes Figure 1 The schematic diagram of the assembly structure of the guide slider and the punch needle assembly in the catheter punching device shown in FIG. Figure 7 The structure shown has the height adjustment assembly removed;

[0026] Fig. 9 yes Figure 7 A schematic diagram of the structure of the height adjustment component part in the structure shown;

[0027] Fig.10 yes Figure 1 A schematic diagram of the structure of the remaining assembly structure after removing the punching device from the catheter punching device shown;

[0028] Fig.11 yes Fig.10 The enlarged view of part B of the assembly structure shown shows the lower end structure of the clamp and its matching structure with the catheter supporting part.

[0029] Reference numerals: 100, base; 11, seat body; 111, guide groove; 112, adjustment screw hole; 12, catheter supporting portion; 121, catheter accommodating groove; 122, first avoidance guide groove; 123, blanking groove;

[0030] 200, fixed support; 21, clamping member guide portion; 211, guide hole;

[0031] 300, punching device; 31, first driving source; 32, guide slider; 321, first inclined surface; 33, punch needle assembly; 331, punch needle; 332, needle seat; 333, punch needle fixing member; 334, driving connecting member; 34, first support; 35, height adjustment assembly; 351, adjusting screw; 352, adjusting pad; 3521, second inclined surface;

[0032] 400, catheter clamping device; 41, second driving source; 42, clamping member; 421, catheter clamping groove; 422, second avoidance guide groove; 423, section; 43, second support;

[0033] 500. Catheter. DETAILED DESCRIPTION

[0034] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The methods described in the following exemplary embodiments do not represent all methods consistent with the present application, but are only preferred embodiments of the present application. Those skilled in the art can make some changes or modify them into equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

[0035] like Figure 1 As shown in the figure, a catheter punching device according to an embodiment of the present application includes a base 100, a fixing support 200, a punching device 300 and a catheter clamping device 400. The catheter clamping device 400 cooperates with the base 100 to fix the catheter 500 together, so that the punching device 300 can punch a hole in the catheter 500 at an appropriate position.

[0036] exist Figure 1 Based on the combination Figure 2As shown in the figure, the base 100 includes a seat body 11 and a catheter support portion 12 for cooperating with the catheter clamping device 400 to clamp and fix the catheter 500. The seat body 11 can also serve as a supporting part of the entire catheter punching device, so that the catheter punching device can be placed in a suitable position and stably supported.

[0037] The catheter support part 12 is integrally formed with the seat body part 11, or fixedly connected to each other. The seat body part 11 is provided with a guide groove 111 for guiding a part of the structure of the punching device 300, and the catheter support part 12 is provided corresponding to one end of the guide groove 111. The catheter support part 12 is provided with a catheter accommodating groove 121 for accommodating the catheter 500, a first avoidance guide groove 122 for avoiding the punching needle 331 mentioned later, and a blanking groove 123 with an inclined bottom surface.

[0038] exist Figure 2 Based on the combination Figure 4 As shown in the enlarged view of part A in FIG. 1 , the guide groove 111 extends along the direction in which the punch 331 moves (i.e. Figure 4 When punching, the punching needle 331 moves along the direction in which the guide groove 111 extends and passes through the conduit 500 in the conduit receiving groove 121. The first avoidance guide groove 122 can leave enough space for the punching stroke of the punching needle 331. In one embodiment, the first avoidance guide groove 122 extends along the extension direction of the guide groove 111 and passes through the conduit receiving groove 121, so that the punching needle 331 can move a sufficiently long stroke when punching. The bottom surface of the blanking groove 123 is inclined from the conduit receiving groove 121 from top to bottom, so that the excess material on the conduit 500 that is punched off can slide off automatically.

[0039] Combination Figure 2 and Figure 3 As shown in the figure, the punching device 300 includes a first driving source 31, a guide slider 32, a punch assembly 33 and a first support 34. The first driving source 31 is fixedly mounted on the seat body 11 through the first support 34. The lower end of the guide slider 32 is slidably disposed in the guide groove 111 on the seat body 11, and the punch assembly 33 is fixedly disposed on the guide slider 32.

[0040] The motion output end of the first driving source 31 is transmission-connected to the guide slider 32 and / or the punch assembly 33, so that the motion output by the first driving source 31 can drive the guide slider 32 and the punch assembly 33 fixed thereto to slide under the guidance of the guide groove 111. In the embodiment described below, the motion output end of the first driving source 31 is transmission-connected to the punch assembly 33, but those skilled in the art can understand that the punch assembly 33 is relatively fixed to the guide slider 32, therefore, connecting the motion output end of the first driving source 31 to the guide slider 32 does not affect the driving relationship here, and even the motion output end of the first driving source 31 can also be connected to both the punch assembly 33 and the guide slider 32.

[0041] Combination Figure 5 and Figure 6 As shown in the figure, the lower end of the first support 34 is fixedly mounted on the bottom of the guide groove 111, and the first driving source 31 installed by the first support 34 has its motion output end extending toward the catheter support portion 12 along the extension direction of the guide groove 111. In one embodiment, the first driving source 31 can be set as a cylinder, and the piston rod of the cylinder serves as the motion output end, which passes through the hole at one end of the guide slider 32 and is connected to the driving connector 334 of the punch needle assembly 33. In this way, when the input source in the cylinder causes the piston rod to extend, the punch needle assembly 33 and the guide slider 32 can be pushed to move quickly along the guide groove 111 toward the direction where the catheter support portion 12 is located.

[0042] like Figure 6 As shown in , the punch assembly 33 includes a punch 331, a needle seat 332, a punch fixture 333 and the above-mentioned drive connector 334. Among them: the punch 331 can be set as a steel needle made of tungsten steel, which can meet the needs of punching thermosetting material catheters without causing problems such as delamination at the punching point and burrs at the hole position. Figure 6 Based on the combination Figure 4 As shown in FIG. 1 , the tip of the punch needle 331 extends beyond the cross section of the guide slider 32 and is arranged to point toward the catheter support portion 12 , so that the tip of the punch needle 331 can impact the catheter 500 on the catheter support portion 12 to form a hole.

[0043] The needle seat 332 may be provided with a plurality of mounting positions, each of which may be used to mount a punch needle 331, and all the punch needles 331 are fixed to the needle seat 332 by punch needle fixing members 333. In this way, when two holes need to be opened at different positions of the catheter 500, this can be achieved by installing two punch needles 331 on the needle seat 332. At the same time, when individual punch needles 331 are worn, new punch needles 331 may be replaced individually to ensure the punching effect. In addition, the specifications of the punch needles 331 fixed on the needle seat 332 may also be adjusted according to the needs of punching. For example, in some cases, when it is necessary to open a special-shaped hole on the catheter 500, the punch needle 331 at the corresponding mounting position may be replaced to meet the special punching requirements.

[0044] Continue to refer Figure 6 As shown in FIG. 1 , the drive connector 334 is fixed to the other end of the needle seat 332 opposite to the end where the punch needle 331 extends. Figure 5 When the first driving source 31 shown in the figure is set as a cylinder, the rod end of its piston rod is provided with an external thread, and a threaded hole is provided on the driving connecting member 334, so that the transmission connection between the first driving source 31 and the punch needle assembly 33 can be realized through the threaded cooperation between the piston rod and the threaded hole on the driving connecting member 334.

[0045] Combination Figure 5 and Figure 7 As shown in , the punching device 300 may also include a height adjustment component 35, which is used to fine-tune the height of the punch assembly 33 in the vertical direction. Unlike other workpieces, the catheter punching device in this application is for a catheter 500 of small size, which requires precise hole height adjustment. At the same time, in some special occasions, it may be necessary to open half of the hole on the catheter 500. At this time, the height of the punch assembly 33 can be raised by the height adjustment component 35 to meet the hole opening needs.

[0046] Specifically, in one embodiment, the height adjustment component 35 includes an adjustment screw 351 and an adjustment pad 352. Figure 8 As shown in FIG. 1 , the bottom of the guide slider 32 is provided with a first inclined surface 321 which is inclined from high to low along the direction of the arrow in the figure. Fig. 9 As shown in FIG. 1 , the second inclined surface 3521 at the top of the adjustment pad 352 is aligned with the Figure 8 The first inclined surface 321 in the assembly is arranged opposite to the first inclined surface 321 and inclined in opposite directions. In the assembled state, the first inclined surface 321 and the second inclined surface 3521 are in contact with each other, and the adjusting screw 351 can be adjusted along Figure 8 The adjusting pad 352 is pushed to move in the direction indicated by the middle arrow (i.e., perpendicular to the sliding direction of the guide slider 32), so that the second inclined surface 3521 slides to different heights of the first inclined surface 321, thereby pushing the guide slider 32 to different heights.

[0047] Since the guide slider 32 moves along the extending direction of the guide groove 111, the first inclined surface 321 should have a sufficient width along this direction to meet the travel requirement of the guide slider 32 at the set height. Figure 8 In the illustrated embodiment, a through groove extending in the direction of the arrow in the figure is provided at the lower end of the guide slider 32, and the bottom surface of the through groove is the first inclined surface 321. When the guide slider 32 slides, since the through groove has a sufficient width in the direction perpendicular to the arrow, the guide slider 32 can slide at a set height.

[0048] Combination Figure 5 and Fig. 9 As shown in the figure, the height adjustment component 35 is also arranged in the guide groove 111, and an adjustment screw hole 112 is also arranged at an appropriate position on the seat body 11, which passes through the outer side of the seat body 11 to the guide groove 111. One end of the adjustment screw 351 is inserted into the adjustment screw hole 112, and an adjustment nut (not shown) can also be arranged in the adjustment screw hole 112, which is screwed to one end of the adjustment screw 351 that passes through the adjustment screw hole 112. The other end of the adjustment screw 351 is connected to the adjustment pad 352, so that the adjustment pad 352 can be driven by the adjustment screw 351 to move. The user can screw the adjusting nut in the adjusting screw hole 112 clockwise / counterclockwise on the outer side of the seat body 11 to make it cooperate with different positions of the adjusting screw 351, and then drive the adjusting pad 352 to move through the axial movement of the adjusting screw 351. During this process, the relative sliding of the second inclined surface 3521 and the first inclined surface 321 eventually causes the second inclined surface 3521 to stop at the preset height of the first inclined surface 321, thereby realizing the height adjustment of the guide slider 32.

[0049] like Fig.10 As shown in the figure, the fixed support 200 is fixedly connected to the seat body 11. The catheter clamping device 400 includes a second driving source 41, a clamping member 42 and a second support 43, wherein: the second driving source 41 is fixedly connected to the fixed support 200 through the second support 43. The motion output end of the second driving source 41 is transmission-connected to the clamping member 42 to drive the clamping member 42 to move up and down in the longitudinal direction close to or away from the catheter supporting portion 12.

[0050] The fixed support 200 has a clamping member guide portion 21, and a guide hole 211 is arranged on the clamping member guide portion 21. The clamping member 42 can be slidably arranged in the guide hole 211. In this way, the hole wall of the guide hole 211 can reliably guide the movement direction of the clamping member 42, so that the clamping member 42 can keep sliding in a position opposite to the catheter supporting portion 12.

[0051] exist Fig.10 Based on the combination Fig.11As shown in FIG, the bottom of the clamping member 42 is provided with a catheter holding groove 421, and the catheter holding groove 421 is connected to the Figure 4 The catheter receiving groove 121 shown in the figure and arranged on the catheter supporting part 12 is directly opposite, and the two can be matched in the docking state to form a clamping groove adapted to the shape of the outer tube wall of the catheter 500, so as to just clamp and fix the catheter 500 at the specified position.

[0052] Continue to refer Fig.11 As shown in , a second avoidance guide groove 422 is also provided at the bottom of the clamp 42, corresponding to the first avoidance guide groove 122 on the catheter support portion 12. In the docking state, the first avoidance guide groove 122 and the second avoidance guide groove 422 jointly form an avoidance cavity that can accommodate the aforementioned punching needle 331 to pass through. It can be understood that when the number of punching needles 331 is set to two, the number of the first avoidance guide groove 122 and the second avoidance guide groove 422 are also set to two, so that two avoidance cavities can be formed. In one embodiment, the lower end of the clamp 42 is also provided with an obliquely arranged cut surface 423, and the cut surface 423 is arranged to make the end of the clamp 42 thinner along the radial direction of the catheter 500, thereby facilitating the opening of the second avoidance guide groove 422 and facilitating the discharge of blanking after punching.

[0053] When the catheter punching device of the present application is used, the user puts the catheter 500 along the extension direction of the catheter receiving groove 121, and aligns the position to be punched with the punch needle 331; then the second driving source 41 drives the clamping member 42 to move downward, so that the catheter clamping groove 421 presses the catheter 500 from top to bottom; then the height correspondence between the punch needle 331 and the catheter 500 can be observed through an external microscope, and according to the specific requirements of the punching, the height of the guide slider 32 can be adjusted by screwing the adjusting nut in the adjusting screw hole 112 clockwise / counterclockwise, so as to adjust the punch needle 331 to the corresponding height. After that, the first driving source 31 can be turned on to drive the punch needle 331 to extend rapidly, and pass through the catheter 500 from the avoidance cavity formed by the first avoidance guide groove 122 and the second avoidance guide groove 422 to complete the hole.

[0054] Before starting, one, two or more punching needles 331 can be placed on the needle seat 332 according to design requirements, and punching needles 331 of appropriate specifications can be selected according to the aperture and shape design requirements. In this way, the catheter punching device in this application can meet the diverse catheter hole opening requirements. Moreover, when the first driving source 31 selects a device with a higher execution speed such as a cylinder, the hole opening efficiency can also be guaranteed.

Claims

1. A catheter perforating device, used for making a hole at an appropriate position of a catheter (500), characterized in that: The catheter perforation device comprises: A base (100), the base (100) comprising a catheter supporting portion (12), the catheter supporting portion (11) being provided with a catheter accommodating groove (121) for accommodating the catheter (500); A catheter clamping device (400), the catheter clamping device (400) comprising a second driving source (41) and a clamping member (42); the clamping member (42) can approach or move away from the catheter supporting portion (12) under the drive of the second driving source (41) to cooperate with the catheter supporting portion (12) to clamp or release the catheter (500); a catheter clamping groove (421) is provided at the bottom of the clamping member (42); in a docking state, the catheter clamping groove (421) can be matched with the catheter accommodating groove (121) to form a clamping groove adapted to the shape of the outer tube wall of the catheter (500); the lower end of the clamping member (42) is also provided with an obliquely arranged cut surface (423); the cut surface (423) is arranged so that the end of the clamping member (42) is thinned along the radial direction of the catheter (500); A punching device (300), the punching device (300) comprising a first driving source (31) and a punching needle assembly (33), the punching needle assembly (33) comprising a punching needle (331), wherein: the first driving source (31) is fixedly mounted on the base (100), the motion output end of the first driving source (31) is transmission-connected to the punching needle assembly (33) to drive the punching needle assembly (33) to move along a direction perpendicular to the extension of the catheter accommodating groove (121), the punching device (300) further comprising a guide slider (32), the lower end of the guide slider (32) being provided with a through groove, the bottom surface of the through groove being provided with a first inclined surface (321) inclined from high to low, the punching device (300) further comprising a A height adjustment component (35) for adjusting the height of the punch needle component (33) relative to the guide tube (500), the height adjustment component (35) comprising an adjusting screw (351) and an adjusting pad (352), the top of the adjusting pad (352) being provided with a second inclined surface (3521), the adjusting pad (352) being supported and matched with the first inclined surface (321) via the second inclined surface (3521), the adjusting screw (351) being able to drive the adjusting pad (352) to move along the direction of the through-groove, so that the adjusting pad (352) is supported at different heights of the first inclined surface (321), and the guide slider (32) being able to slide along the direction perpendicular to the through-groove at a set height; The base (100) further comprises a seat body (11), the seat body (11) being provided with a guide groove (111) extending in the moving direction of the punching needle assembly (33), the lower end of the guide slider (32) being slidably disposed in the guide groove (111), the catheter supporting portion (12) being provided with a first avoidance guide groove (122) extending in the sliding direction of the guide slider (32) in the guide groove (111), and a second avoidance guide groove (422) being provided at a corresponding position of the clamping member (42), and in a docked state, the first avoidance guide groove (122) and the second avoidance guide groove (422) can be matched to form an avoidance cavity for accommodating the punching needle (331) to pass through, and the avoidance cavity extends through the catheter accommodating groove (121).

2. The catheter drilling device according to claim 1, characterized in that: The base (100) is provided with an adjusting screw hole (112) which passes through from the outer side surface to the guide groove (111); one end of the adjusting screw rod (351) is connected to the adjusting cushion block (352), and the other end is passed through the adjusting screw hole (112).

3. The catheter drilling device according to claim 1, characterized in that: The punch needle assembly (33) comprises a needle seat (332) and a punch needle fixing member (333), wherein: the needle seat (332) is fixedly mounted on the guide slider (32), a plurality of mounting positions are arranged on the needle seat (332), each mounting position is correspondingly mounted with a punch needle (331), all the punch needles (331) are fixed relative to the needle seat (332) through the punch needle fixing member (333), and the tip of the punch needle (331) extends beyond the end surface of the guide slider (32).

4. The catheter drilling device according to claim 1, characterized in that: The catheter perforating device further comprises a fixed support (200) fixedly connected to the base (100), the fixed support (200) comprising a clamping member guide portion (21), and the clamping member guide portion (21) is provided with a guide hole (211) for slidingly guiding the clamping member (42).

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