Developing anesthesia catheter

Abstract

The utility model discloses a developing anesthesia catheter, which belongs to the technical field of medical instruments and comprises a catheter body, a reserved cavity is arranged on the inner wall of the catheter body, developing materials are filled in the reserved cavity, and when the catheter body is broken, the developing materials in the reserved cavity can move. The liquid or solid developing material is injected into the reserved cavity in the catheter body, when the catheter body is broken, the liquid developing material can overflow, the area is large, the breaking point can be clearly found during X-ray shooting, and therefore the breaking point of the catheter body can be clearly observed. When the stretchable solid developing material is broken, the stored elastic potential energy is released, and the solid developing material at the two ends of the breaking point can move in opposite directions, so that the distance between the two ends of the breaking point is enlarged, the breaking point can be conveniently observed through X-rays, and the follow-up searching work of the breaking point is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, it relates to a developing anesthesia catheter. BACKGROUND

[0002] The epidural anesthesia catheter is a kind of medical equipment, is used to infuse anesthetic to control the pain feeling of patient, it is through puncturing epidural space and the way of placing a soft plastic catheter into epidural space, epidural space is located between the space between spinal bone and spinal cord, can enter by the way of lumbar puncture or sacral puncture, after catheter insertion, doctor needs to infuse appropriate anesthetic through catheter to control the pain feeling of patient.

[0003] In order to facilitate intraoperative observation, developing agent will be added in the tube wall material of catheter, can show clear catheter profile under X-ray irradiation, enable doctor to observe the trend and position of catheter in body, and since catheter is thin, developing line in catheter is thinner, such as the patent of a new type developing anesthesia catheter with multiple developing lines disclosed in CN203329161U, when catheter is broken in body or catheter is not completely broken, the breaking point can not be observed clearly when X-ray is taken, and targeted treatment cannot be carried out. UTILITY MODEL CONTENT

[0004] The utility model embodiment provides a kind of developing anesthesia catheter to solve the technical problem mentioned above.

[0005] The utility model embodiment adopts the following technical scheme: including catheter body, the inner wall of the catheter body is equipped with reserved cavity, and the inside of the reserved cavity is filled with developing material, and when the catheter body is broken, the developing material in the reserved cavity can move, to facilitate the observation of the breaking point of the catheter body.

[0006] Further, the developing material is liquid developing material.

[0007] Further, the developing material is solid developing material.

[0008] Further, the solid developing material uses polylactic acid solid, and can be stretched and distributed in the inside of reserved cavity.

[0009] Further, the maximum transverse cross-sectional dimension of the solid developing material is less than the inner diameter of the catheter body, so that there is gap between the solid developing material and the catheter body, to allow the solid developing material to curl in the catheter body when broken.

[0010] Further, the number of the reserved cavities is multiple, and multiple reserved cavities are circumferentially equidistantly arranged around the axis of catheter body.

[0011] Further, the number of the reserved cavities is one, and the reserved cavity is sleeved outside the inner core of the catheter body.

[0012] The above at least one technical scheme adopted by the embodiment of the utility model can achieve the following beneficial effects:

[0013] In the utility model, when the catheter body is broken, the liquid developing material can overflow, and the area is large, so that the breaking point can be found clearly when X-ray is taken, and when the stretchable solid developing material is broken, the elastic potential energy stored is released, the solid developing material at both ends of the breaking point can move in opposite directions, so that the distance between both ends of the breaking point is expanded, and the breaking point can be observed by X-ray, and the subsequent finding work of the breaking point is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model.

[0015] Figure 1 It is the three-dimensional structure schematic of the utility model Figure 1 ;

[0016] Figure 2 It is the three-dimensional structure schematic of the utility model Figure 2 ;

[0017] Figure 3 It is the structure schematic of the first embodiment provided by the utility model;

[0018] Figure 4 It is the structure schematic of the second embodiment provided by the utility model;

[0019] Figure 5 It is the distribution structure schematic of multiple reserved cavities in the utility model;

[0020] Figure 6 It is the distribution structure schematic of one reserved cavity in the utility model.

[0021] Reference signs

[0022] Catheter body 1, reserved cavity 2, developing material 3, liquid developing material 31, solid developing material 32, gap 4. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model technical scheme will be described clearly and completely in combination with the utility model specific embodiments and corresponding drawings below. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] The technical scheme provided by each embodiment of the utility model will be described in detail below in combination with the drawings.

[0025] The utility model embodiment provides a kind of developing anesthesia catheter, including catheter body 1, the inner wall of catheter body 1 is equipped with reserved cavity 2, and the inside of reserved cavity 2 is filled with developing material 3, and when catheter body 1 breaks, developing material 3 in reserved cavity 2 can move, to cooperate developing instrument can help doctor to locate the broken catheter body 1 quickly in emergency, will be described in detail in combination with specific implementation mode as follows:

[0026] As Figure 2 As shown, the first embodiment provided by the utility model, developing material 3 is liquid developing material 31, can adopt iohexol, iopamidol etc. and the harm to human body is less, and the metabolic process in body is relatively simple, and developing material 3 can be discharged outside by kidney, when catheter body 1 breaks, liquid developing material 3 can overflow, the area of developing material 3 at breaking point is larger at this time, and the position of breaking point can be observed by developing instrument.

[0027] As Figure 3As shown, this is the second embodiment provided by the present invention. The developing material 3 is a solid developing material 32, and the solid developing material 32 is made of polylactic acid. Both ends of the solid developing material 32 are fixedly connected to both ends of the reserved cavity 2, and it can be distributed inside the reserved cavity 2 in a stretched state. Polylactic acid is a thermoplastic polyester with a certain degree of stretchability. When the polylactic acid material is placed in the reserved cavity 2 in a stretched state, elastic potential energy accumulates inside the polylactic acid material. When the polylactic acid material breaks, this elastic potential energy is released, and the polylactic acid solids at both ends of the break point move in opposite directions, thereby increasing the distance between the polylactic acid materials at both ends of the break point. This energy is then transferred through the developing instrument. When observing with a device, it is easy to check, and it is a biodegradable material that can be decomposed into lactic acid in the body and eventually absorbed by the human body. Unlike the first implementation method, when the catheter body 1 is broken, the solid contrast material 32 will not flow out of the catheter body 1, reducing the impact of the contrast material 3 on the human body. Although the liquid contrast material 31 requires a certain amount of time to be metabolized in the patient's body when it overflows compared to the solid polylactic acid contrast material 32, leakage can occur when the catheter body 1 is not completely broken, but only at the break point, so that the problem of the catheter body 1 can be detected in time.

[0028] Furthermore, the maximum transverse cross-sectional dimension of the solid imaging material 32 is smaller than the inner diameter of the catheter body 1, resulting in a gap 4 between the solid imaging material 32 and the catheter body 1. This allows the solid imaging material 32 to curl up inside the catheter body 1 when it breaks. If the cross-section of the solid imaging material 3 is circular, that is, the outer diameter of the solid imaging material 3 is smaller than the inner diameter of the catheter body 1, the solid imaging material 32 and the reserved cavity 2 are not tightly fitted, but have a certain amount of space. This allows the solid imaging material 32 to move freely inside the catheter body 1 to a certain extent. In particular, after the solid imaging material 32 breaks, there is enough space for it to curl up, which increases the distance between the two ends of the break point.

[0029] Among them, such as Figure 5 As shown, there are multiple reserved cavities 2, and these multiple reserved cavities 2 are equidistantly arranged around the axis of the catheter body 1. The imaging material 3 can play a role from multiple positions. During imaging examinations, the position of the catheter body 1 can be more easily found from any angle. For example, in X-ray examinations, imaging from multiple directions can ensure that the catheter body 1 can be clearly located in the complex three-dimensional space inside the body, avoiding the situation where some catheters are difficult to observe due to uneven distribution of imaging material 3.

[0030] like Figure 6As shown, the number of the reserved cavities 2 can also be one, and the reserved cavities 2 are sleeved outside the inner core of the catheter body 1, compared with multiple reserved cavities 2, the manufacturing cost and difficulty are lower, the reserved cavities 2 surrounding the inner core can provide continuous developing effect, in the imaging examination, the outline of the catheter body 1 can be clearly displayed, that is, a ring is drawn outside the catheter body 1 to develop, and the continuous development is helpful to judge whether the catheter body 1 is abnormal, such as twisting, folding and the like.

[0031] The above merely describes the embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A contrast-enhancing anesthesia catheter, comprising a catheter body (1), characterized in that, The inner wall of the catheter body (1) is provided with a reserved cavity (2), and the interior of the reserved cavity (2) is filled with a radiopaque material (3). When the catheter body (1) breaks, the radiopaque material (3) in the reserved cavity (2) can move, so as to facilitate the observation of the break point of the catheter body (1).

2. The contrast-enhancing anesthesia catheter according to claim 1, characterized in that, The developing material (3) is a liquid developing material (31).

3. The contrast-enhancing anesthesia catheter according to claim 1, characterized in that, The developing material (3) is a solid developing material (32).

4. The contrast-enhancing anesthesia catheter according to claim 3, characterized in that, The solid developing material (32) is made of polylactic acid solid and can be stretched and distributed inside the reserved cavity (2).

5. The contrast-enhancing anesthesia catheter according to claim 3, characterized in that, The maximum transverse cross-sectional dimension of the solid imaging material (32) is smaller than the inner diameter of the catheter body (1), so that there is a gap (4) between the solid imaging material (32) and the catheter body (1) to allow the solid imaging material (32) to curl up inside the catheter body (1) when it breaks.

6. The contrast-enhancing anesthesia catheter according to claim 1, characterized in that, The number of the reserved cavities (2) is multiple, and the multiple reserved cavities (2) are equidistantly arranged around the axis of the catheter body (1).

7. The contrast-enhancing anesthesia catheter according to claim 1, characterized in that, The number of the reserved cavity (2) is one, and the reserved cavity (2) is sleeved on the outside of the inner core of the catheter body (1).

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