Arterial perfusion catheter for radiation intervention
By incorporating a rotating array valve, spring, and skeleton structure on the inner side of the catheter, the injection speed of the drug solution is buffered, thus solving the problem of excessively fast drug injection and achieving a safer arterial perfusion catheter design.
Patent Information
- Application Number
- CN202422473695.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-14
AI Technical Summary
The existing catheters do not have a structure on the inside to slow down the flow rate of the drug solution, which leads to the drug solution being injected too quickly, which may impact the patient's artery and pose a risk of secondary damage.
A three-valve structure with a rotating array is set inside the catheter, equipped with a spring, a skeleton, and ball bearings. Through the rotation of the valves and the elastic recovery mechanism of the springs, the injection speed of the drug solution is buffered, and blood backflow is prevented when the drug solution stops.
It effectively slows down the injection speed of the medication, avoids secondary harm to patients, prevents blood backflow, improves safety, and facilitates widespread use.
Smart Images
Figure CN223516770U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of arterial perfusion, especially to an arterial perfusion catheter for radio intervention. BACKGROUND
[0002] Arterial perfusion chemotherapy is a minimally invasive, safe and less painful tumor treatment method, which refers to introducing special catheters, guide wires and other precision instruments into the human body under the guidance of medical imaging equipment to treat tumors locally.
[0003] The existing catheter does not have a structure for slowing down the flow rate of the liquid medicine, and the injection speed of the liquid medicine is too fast, which can easily cause a large impact on the patient's artery and easily cause secondary injury to the patient, and the use safety needs to be improved. UTILITY MODEL CONTENT
[0004] The utility model solves the technical problem of overcoming the defects of the prior art and provides an arterial perfusion catheter for radio intervention, which can buffer the injection of liquid medicine to avoid secondary injury to the patient caused by the too fast injection speed of the liquid medicine, can avoid blood backflow, has good use safety, is easy to popularize, and can effectively solve the problems in the background art.
[0005] To achieve the purpose of the utility model, the utility model adopts the following technical solutions:
[0006] An arterial perfusion catheter for radio intervention includes a perfusion catheter body, the inner side of the perfusion catheter body is provided with a valve, the valve on the same section has three pieces, the three pieces of valve are arranged in a rotating array, and the three pieces of valve are arranged in a circular piece structure in a natural state. The middle part of the circular piece structure has a through hole for the contrast guide wire to pass through.
[0007] Further, it further includes a spring piece, and the spring piece is fixed to the side surface of the valve.
[0008] Further, the spring piece is arranged at a position opposite to the direction of injection of the liquid medicine, one end of the spring piece is fixedly connected to the inner wall of the perfusion catheter body.
[0009] Further, it further includes a skeleton, and the skeleton is fixed to the side surface of the valve.
[0010] Further, it further includes a ball, and the ball is rotatably connected to the end of the spring piece, and the ball is arranged at a position corresponding to the through hole.
[0011] Compared with the prior art, the arterial perfusion catheter for radiotherapy has the following advantages: the liquid medicine impacts the valve when being injected, at this time, the three pieces of the valve are in the open state, thereby buffering the liquid medicine, so as to slow down the injection speed of the liquid medicine, thereby avoiding the secondary injury to the patient caused by the too fast injection speed of the liquid medicine, at this time, the shell fragment on the valve is pressed in the opposite direction of the liquid medicine injection, when the liquid medicine is not injected, the shell fragment drives the valve to return to the original position under the action of the elastic force, at this time, the three pieces of the valve are arranged in a round piece structure, the round piece structure can avoid the backflow of blood, and the use safety is good and the popularization is convenient. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;
[0013] Figure 2 It is a three-dimensional sectional structure schematic diagram of the utility model;
[0014] Figure 3 It is Figure 2 the enlarged structure schematic diagram of A of the utility model;
[0015] Figure 4 It is a three-dimensional sectional side structure schematic diagram of the utility model.
[0016] In the drawing: 1-perfusion catheter body, 2-valve, 3-shell fragment, 4-skeleton, 5-rolling ball. DETAILED DESCRIPTION
[0017] The utility model can be explained in detail through the following examples, and the purpose of the utility model is to protect all technical improvements within the scope of the utility model.
[0018] Please refer to Figures 1-4 The embodiment provides a technical scheme: an arterial perfusion catheter for radiotherapy, which comprises a perfusion catheter body 1, the inner side of the perfusion catheter body 1 is provided with a valve 2, the valve 2 on the same section has three pieces, the three pieces of the valve 2 are arranged in a rotating array, the three pieces of the valve 2 are arranged in a round piece structure in a natural state, and the middle part of the round piece structure is provided with a through hole for a contrast guide wire to pass through.
[0019] The elastic sheet 3 is fixed on the side of the valve 2, and is arranged at a position opposite to the injection direction of the medicine liquid, one end of the elastic sheet 3 is fixedly connected with the inner wall of the perfusion catheter body 1, when the medicine liquid is injected, the valve 2 is impacted, at this time, the three pieces are in the open state, thereby buffering the medicine liquid, so as to slow down the injection speed of the medicine liquid, thereby avoiding the secondary injury to the patient caused by the too fast injection speed of the medicine liquid, at this time, the elastic sheet 3 on the valve 2 is pressed to the opposite direction of the medicine liquid injection, when the medicine liquid is not injected, the elastic sheet 3 drives the valve 2 to return to the original position under the action of the elastic force, at this time, the three pieces of the valve 2 are arranged in a circular sheet structure, which can avoid the backflow of blood, has good safety in use, and is convenient to popularize.
[0020] The skeleton 4 is fixed on the side of the valve 2, and is used for supporting the valve 2.
[0021] The ball 5 is rotatably connected to the end of the elastic sheet 3, and is arranged at a position corresponding to the through hole, and is used for generating rolling friction with the elastic sheet 3 when the contrast guide wire passes through, thereby facilitating the smooth passing of the contrast guide wire, which avoids the direct contact and friction between the existing contrast guide wire and the inner wall of the pipe body when passing through the perfusion catheter body 1, thereby making the passing more difficult.
[0022] The working principle of the arterial perfusion catheter for radiotherapy intervention is as follows: when the medicine liquid is injected, the valve 2 is impacted, at this time, the three pieces are in the open state, thereby buffering the medicine liquid, so as to slow down the injection speed of the medicine liquid, at this time, the elastic sheet 3 on the valve 2 is pressed to the opposite direction of the medicine liquid injection, when the medicine liquid is not injected, the elastic sheet 3 drives the valve 2 to return to the original position under the action of the elastic force, at this time, the three pieces of the valve 2 are arranged in a circular sheet structure, which can avoid the backflow of blood, the skeleton 4 is used for supporting the valve 2, and the ball 5 is used for generating rolling friction with the elastic sheet 3 when the contrast guide wire passes through, thereby facilitating the smooth passing of the contrast guide wire, which avoids the direct contact and friction between the existing contrast guide wire and the inner wall of the pipe body when passing through the perfusion catheter body 1, thereby making the passing more difficult.
[0023] It is worth noting that the components disclosed in the above embodiments are all general standard components or components known to those skilled in the art, and the structure and principle thereof can be known by the technical personnel through a technical manual or through a conventional experimental method.
[0024] In the utility model, unless another definite provision and limitation, the term "mount", "link", "connect", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element internal communication or two element's interaction relation, unless another definite limitation.For ordinary skill in the art, the above-mentioned term can be understood according to the specific situation in the utility model, such as rotary connection can be through bearing rotary connection.
[0025] The utility model is not detailed part of the prior art, although the utility model is specifically shown and introduced in combination with preferred implementation scheme, the specific implementation of this technical scheme method and approach is many, the above-mentioned only is the preferred implementation mode of the utility model, but the skilled person in the art should understand that, in the form and the detail can make various changes to the utility model within the spirit and scope of the utility model defined in the appended claims without departing from the utility model, all are the protection scope of the utility model.
Claims
1. An arterial perfusion catheter for use in radio interventions, comprising a perfusion catheter body (1), characterized in that: The inner side of the perfusion catheter body (1) is provided with a valve (2), the valve (2) on the same section has three pieces, the three pieces of valve (2) are arranged in a rotating array, and the three pieces of valve (2) are arranged in a circular piece structure in a natural state, and the middle part of the circular piece structure is provided with a through hole for the contrast guide wire to pass through.
2. The arterial infusion catheter for radio-intervention according to claim 1, wherein: Further comprising a spring piece (3), the spring piece (3) is fixed on the side of the valve (2).
3. An arterial infusion catheter for use in radio-intervention according to claim 2, characterized in that: The spring piece (3) is arranged at a position opposite to the direction of the injection of the medicinal liquid, and one end of the spring piece (3) is fixedly connected with the inner wall of the perfusion catheter body (1).
4. The arterial infusion catheter for radio-intervention according to claim 1, wherein: Further comprising a skeleton (4), the skeleton (4) is fixed on the side of the valve (2).
5. The arterial infusion catheter according to claim 1 or 2, wherein: Further comprising a ball (5), the ball (5) is rotatably connected at the end of the spring piece (3), and the ball (5) is arranged at a position corresponding to the through hole.