A catheter developing ring pre-compression positioning device

Abstract

The invention discloses a catheter developing ring pre-pressing positioning device, comprising a bearing platform, a support frame, a catheter supporting V-shaped groove, a ruler device, a pre-pressing device and a lever; the catheter supporting V-shaped groove is fixed on the bearing platform through a fixing seat; the ruler device comprises a vertical slide rail, a ruler seat which is sleeved on the vertical slide rail and can be vertically lifted and lowered, and a ruler card fixed on the ruler seat; the ruler card is provided with a vertical left protrusion line and a right protrusion line; the pre-pressing device comprises a horizontal guide rail fixed on the bearing platform and a pre-pressing device body, the pre-pressing device body is provided with a cylinder and a pressure petal with a circular hole; the lever is provided with a longitudinal rod and a transverse rod; compared with the prior art, the present invention changes the movable workpiece into a movable pre-pressing device, the developing ring is fixed throughout the whole process, and there is no risk of displacement; only the pre-pressing device needs to be moved, and the lifting and lowering of the ruler will be automatically completed, so that it can be operated quickly.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a catheter developing ring pre-compression positioning device. Background Art

[0002] The expansion of human blood vessels or cavities and the delivery of stents are inseparable from the use of balloon dilatation catheters. During interventional surgery, doctors rely on the non-radioactive properties of the balloon's developing ring to locate the balloon under the guidance of digital subtraction angiography (DSA) equipment. The installation of the developing ring generally includes two steps: pre-pressing the developing ring on the material tube and forging the developing ring tightly into the material tube. The first step is directly related to the accuracy of the developing ring's positioning and process efficiency.

[0003] At present, the pre-pressing positioning of the developer ring generally takes two operations:

[0004] 1) First, insert the mandrel into the catheter, and let the head of the mandrel pass through the other end of the catheter by more than 10mm. Then, put the developing ring on the catheter with the mandrel, and move the developing ring to the predetermined position according to the designed size on the steel ruler;

[0005] 2) Use clamps or other crimping tools to clamp and position.

[0006] The above-mentioned pre-pressing positioning method causes the developer ring to shift because the two operations are not on the same load platform, and the positioning accuracy of the general steel ruler is not high, which affects the product quality and work efficiency. After measuring and locating the position of the developer ring, it is necessary to be particularly careful and operate slowly when manually feeding the workpiece into the pre-pressing device. The semi-finished product with the developer ring shifted due to slight shaking cannot be reworked after pre-pressing and can only be scrapped. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a catheter developing ring pre-pressing positioning device. The device solves the problem that the developing ring is easily shaken and shifted when it is moved to a predetermined position and then clamped and positioned on a different bearing platform, and also solves the problem that the positioning requires the use of a steel ruler for low measurement accuracy, thereby improving the qualified rate and efficiency.

[0008] In order to solve the above technical problems, the invention adopts the following technical solutions:

[0009] A catheter developing ring pre-pressing and positioning device, comprising a bearing platform, a support frame, a catheter supporting V-shaped groove, a scale device, a pre-pressing device and a lever;

[0010] The conduit supporting V-shaped groove is fixed on the bearing platform by means of positioning pins;

[0011] The scale device comprises a vertical slide rail, a scale seat mounted on the vertical slide rail and capable of vertical lifting and lowering, and a scale card fixed on the scale seat; the scale card is provided with a vertical left protrusion line and a right protrusion line; the left protrusion line is used to mark the developing ring, and the right protrusion line is used to mark the right end point of the catheter;

[0012] The pre-pressing device comprises a horizontal guide rail fixed on the bearing platform and a pre-pressing device body, and the pre-pressing device body is provided with a cylinder and a pressure petal with a circular hole;

[0013] The support frame is fixed on the bearing platform and is located between the pre-pressing device and the scale device; a transverse cantilever is provided at the upper end of the support frame;

[0014] The lever is provided with a longitudinal rod and a transverse rod; the lower end of the longitudinal rod is fixed to the middle of the transverse rod, and the upper end of the longitudinal rod is rotatably hinged and fixed to the transverse cantilever of the support frame; the lever as a whole can rotate forward and backward around the hinge point.

[0015] As an implementation manner, the ruler card is fixed on the ruler base by magnet adsorption.

[0016] As an implementation mode, a plurality of positioning holes are provided on a bearing platform located in the middle of a horizontal guide rail of the pre-pressing device, and positioning pins are provided in the positioning holes.

[0017] As an implementation manner, the number of the positioning holes is 2-20.

[0018] As an implementation manner, the longitudinal rod of the lever is bent.

[0019] As an embodiment, the surface of the catheter supporting V-shaped groove is smooth.

[0020] As an implementation mode, a magnet is provided at the bottom of the catheter supporting V-shaped groove.

[0021] Any range described in the present invention includes the end value and any numerical value between the end values ​​and any sub-range formed by the end value or any numerical value between the end values.

[0022] Unless otherwise specified, all raw materials in the present invention can be purchased from the market, and the equipment used in the present invention can adopt conventional equipment in the relevant field or refer to the existing technology in the relevant field.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. Simple operation, the developing ring positioning is simple and fast, without the need for conventional measuring tools;

[0025] 2. Compared with the prior art, the present application changes the movable workpiece into a movable pre-pressing device, and the developing ring is fixed throughout the whole process, without the risk of displacement;

[0026] 3. This application only requires moving the pre-pressing device, and the lifting and lowering of the scale will be completed automatically, which can be operated quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the catheter developing ring pre-pressing positioning device of the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of the rear view structure after removing the main body of the pre-pressing device;

[0030] Figure 3 It is a front view of the catheter developing ring pre-compression positioning device of the present invention. DETAILED DESCRIPTION

[0031] In order to explain the present invention more clearly, the present invention is further described below in conjunction with preferred embodiments. It should be understood by those skilled in the art that the following specific description is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] See also Figure 1-Figure 3 As shown, as one aspect of the present invention, a catheter developing ring pre-pressing positioning device of the present invention comprises:

[0036] The carrying platform 101 is used to carry various components of the catheter developing ring pre-pressing and positioning device of the present invention;

[0037] A support frame 102, used to support the fixed support of the lever so that it can rotate forward and backward;

[0038] The catheter supporting V-shaped groove 103 is used to support the catheter;

[0039] A ruler device, used to mark the specific position of the developing ring in the catheter in the catheter supporting V-shaped groove 103, and also mark the position of the right end of the catheter;

[0040] A pre-pressing device 3, used for forging and pressing the developing ring tightly into the guide tube;

[0041] The lever; the lever and the support frame cooperate to be a transmission device that pushes the scale device upward during the forward movement of the preloading device, and plays a role in force transmission; that is, the preloading device 3 pushes the lever, and the lever pushes the scale device upward to avoid the preloading device;

[0042] The conduit supporting V-shaped groove 103 is fixed on the carrying platform 101 through a positioning pin 104;

[0043] The scale device comprises a vertical slide rail 205, a scale seat 206 mounted on the vertical slide rail and capable of vertical lifting and lowering, and a scale card 201 fixed on the scale seat; the scale card is provided with a vertical left protrusion line 202 and a right protrusion line 203; the left protrusion line 202 is used to mark the developing ring, and the right protrusion line 203 is used to mark the right end point of the catheter; the positioning of the developing ring depends on the left protrusion line 202 on the scale card, and the positioning is completed by placing the developing ring and the right end of the catheter close to the protrusion of the scale card respectively;

[0044] The pre-pressing device 3 comprises a horizontal guide rail 303 fixed on the bearing platform and a pre-pressing device body, and the pre-pressing device body is provided with a cylinder 302 and a pressure flap 301 with a circular hole; it can be understood that when the catheter 5 is positioned in the catheter support V-shaped groove 103, the scale device (scale seat 206 and scale card 201) is raised by the movement of the pre-pressing device 3, and the right end of the catheter 5 passes through the pressure flap 301 until the developing ring enters the pressure flap 301 position;

[0045] The support frame 102 is fixed on the bearing platform 101 and is located between the pre-pressing device and the scale device; a transverse cantilever 105 is provided at the upper end of the support frame 102;

[0046] The lever is provided with a longitudinal rod 401 and a transverse rod 402; the lower end of the longitudinal rod 401 is fixed to the middle of the transverse rod 402, and the upper end of the longitudinal rod 401 is rotatably hinged and fixed to the transverse cantilever 105 of the support frame 102; the lever as a whole can rotate forward and backward around the hinge point 403, and sliding bearings are provided at both ends of the transverse rod 402, and the left end of the transverse rod is arranged below the scale seat. It can be understood that during operation, the movement of the pre-pressing device first pushes the longitudinal rod 401, and the longitudinal rod 401 drives the left end of the transverse rod to lift up, thereby lifting the scale seat and the scale card, providing horizontal movement space for the pre-pressing device.

[0047] In one embodiment, the scale card 201 is fixed on the scale seat 206 by adsorption of a magnet 204. Different scale cards are used for products of different specifications, and the scale cards can be easily replaced by adsorption of magnets;

[0048] In one embodiment, a plurality of positioning holes 105 are provided on the carrier platform 101 located in the middle of the horizontal guide rail 303 of the pre-pressing device 3, and positioning pins 104 are provided in the positioning holes 105. The positioning pins 104 on the carrier platform 101 are placed in appropriate positioning holes 105 to ensure that when the pre-pressing device 3 moves to the far left, the horizontal projection position of the left protrusion 202 on the scale card is within the pressing range of the pre-pressing device.

[0049] In one embodiment, the number of the positioning holes 105 is 2-20.

[0050] In one embodiment, the longitudinal rod 401 of the lever is bent.

[0051] In one embodiment, the surface of the catheter supporting V-shaped groove 103 is smooth; a magnet is provided at the bottom of the catheter supporting V-shaped groove 103. It can be understood that the magnet is installed at the bottom of the V-shaped groove with a smooth surface, and when the catheter 5 is adsorbed by the magnet, the catheter 5 automatically fits to the bottom of the V-shaped groove, which is convenient for positioning and removal after processing. Moreover, during the process of measuring and positioning the developing ring position to the mobile pre-pressing device 3 for clamping and positioning, the catheter 5 as a workpiece is firmly adsorbed to the bottom of the V-shaped groove and will not move or shake.

[0052] The working principle of the catheter development ring pre-pressure positioning device of the present application is as follows:

[0053] Fix the corresponding ruler card 201 position according to the product size requirements. The ruler card is fixed on the ruler frame by a magnet 204, which is convenient for replacement and positioning. Put the positioning pin 104 on the carrier platform 101 into the appropriate positioning hole 105 to ensure that when the pre-pressing device 3 moves to the far left, the horizontal projection position of the left protrusion 202 on the ruler is within the pressing range of the pre-pressing device;

[0054] The developing ring is put on the inner tube of the balloon catheter 5 with the core shaft inside, and placed together in the V-shaped groove 103, and automatically positioned to the lowest point in the groove.

[0055] Move the guide tube so that the right end point abuts against the right protrusion 203 of the ruler card 201, and move the developing ring abut against the left protrusion 202 of the ruler to complete the positioning of the developing ring;

[0056] The pre-pressing device 3 is pushed to the left to the end of the stroke, and the scale device rises (including the scale seat and the scale card) to avoid the pre-pressing device 3. The developing ring is just within the pressing range of the pre-pressing device, and the pre-pressing switch 304 is pressed to complete the pre-pressing. The pre-pressing switch is turned off, the pre-pressing device is removed, the scale device falls back, and the catheter is removed to complete the processing.

[0057] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A catheter developing ring pre-compression positioning device, characterized in that: It includes a load-bearing platform, a support frame, a catheter supporting V-shaped groove, a scale device, a pre-pressing device and a lever; The conduit supporting V-shaped groove is fixed on the bearing platform through a fixing seat; The scale device comprises a vertical slide rail, a scale seat mounted on the vertical slide rail and capable of vertical lifting and lowering, and a scale card fixed on the scale seat; the scale card is provided with a vertical left protrusion line and a right protrusion line; The pre-pressing device comprises a horizontal guide rail fixed on the bearing platform and a pre-pressing device body, and the pre-pressing device body is provided with a cylinder and a pressure petal with a circular hole; The support frame is fixed on the bearing platform and is located between the pre-pressing device and the scale device; a transverse cantilever is provided at the upper end of the support frame; The lever is provided with a longitudinal rod and a transverse rod; the lower end of the longitudinal rod is fixed to the middle of the transverse rod, and the upper end of the longitudinal rod is rotatably hinged and fixed to the transverse cantilever of the support frame; the lever as a whole can rotate forward and backward around the hinge point, and sliding bearings are provided at both ends of the transverse rod.

2. The catheter developing ring pre-compression positioning device according to claim 1, characterized in that: The ruler card is fixed on the ruler seat by magnet adsorption.

3. The catheter developing ring pre-compression positioning device according to claim 1, characterized in that: A plurality of positioning holes are arranged on a bearing platform located in the middle of a horizontal guide rail of the pre-pressing device, and positioning pins are arranged in the positioning holes.

4. The catheter developing ring pre-compression positioning device according to claim 3, characterized in that: The number of the positioning holes is 2-20.

5. The catheter developing ring pre-compression positioning device according to claim 1, characterized in that: The longitudinal rod of the shifting rod is bent.

6. The catheter developing ring pre-compression positioning device according to claim 1, characterized in that: The surface of the conduit supporting V-shaped groove is smoothly arranged.

7. The catheter developing ring pre-compression positioning device according to claim 1, characterized in that: A magnet is arranged at the bottom of the conduit supporting V-shaped groove.

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