Epidural puncture needle with optical fiber

Abstract

The utility model discloses an epidural puncture needle with an optical fiber, which relates to the field of epidural puncture needles and comprises a puncture needle head and a needle tube connector, the needle tube connector is fixedly mounted at a non-puncture end of the puncture needle head and comprises a positioning middle seat, an outer cannula and a sealing sleeve for mounting the puncture needle head, the needle tube connector is installed at one end of the puncture needle head, the outer insertion tube and the sealing sleeve are arranged on the two sides of the positioning middle base respectively, the positioning middle base, the outer insertion tube and the sealing sleeve are integrally formed, and a detection optical cable is fixedly installed in the puncture needle head. Meanwhile, the two optical fiber bundles are arranged in the puncture needle head, it is guaranteed that one optical fiber bundle can be irradiated through the light source assembly during inspection, irradiation is achieved through the optical fiber bundle, and the other optical fiber bundle is used for receiving and observing changes of irradiation light.

Description

Technical Field

[0001] The utility model relates to the technical field of epidural puncture needles, in particular to an epidural puncture needle with optical fiber. Background Art

[0002] Epidural anesthesia is the injection of local anesthetic into the epidural space to block the spinal nerve roots and produce anesthesia in the area they control. The safe entry of the epidural puncture needle into the epidural space is the primary task of the anesthesiologist. The puncture needle must pass through the skin, supraspinal ligament, interspinal ligament, and yellow ligament in order to enter the epidural space.

[0003] The existing Chinese patent with announcement number CN201333084Y discloses an epidural puncture needle that can effectively control the depth of the needle entering the human body. The needle is a medical device, including a needle body, the front end of the needle body is a needle, a positioning sleeve is worn on the needle, and a fixing screw is threaded on the positioning sleeve, which can be against the needle.

[0004] With respect to the above-mentioned related technologies, it is found that the existing epidural puncture needle needs to judge the position of the epidural space during spinal anesthesia in order to accurately perform local anesthesia, and the traditional method is to judge by the disappearance of pressure. On the one hand, it is easy to cause the puncture to be in place, and on the other hand, it is possible for air to enter the subarachnoid space and cause postoperative headaches. Utility Model Content

[0005] The present application provides an epidural puncture needle with optical fiber, which is used to solve the problems raised in the background technology.

[0006] The utility model is achieved in this way:

[0007] An epidural puncture needle with optical fiber comprises a puncture needle and a needle tube connector, wherein the needle tube connector is fixedly mounted on the non-puncture end of the puncture needle, the needle tube connector comprises a positioning center seat, an outer insert tube and a sealing sleeve for mounting the puncture needle, the outer insert tube and the sealing sleeve are arranged on both sides of the positioning center seat, and the positioning center seat, the outer insert tube and the sealing sleeve are integrally formed, a detection optical cable is fixedly mounted in the puncture needle, a mounting frame is fixedly engaged with the positioning center seat, a light source assembly and a display panel are fixedly arranged on the mounting frame, the light source assembly is connected to one end of the detection optical cable, and the display panel is connected to the other end of the detection optical cable through a photoelectric conversion circuit.

[0008] Furthermore, the positioning center seat includes a middle frame and outer panels, the outer panels are arranged on both sides of the middle frame, and the outer panels and the middle frame are integrally formed.

[0009] Furthermore, the detection optical cable includes a protective shell, a first optical fiber bundle and a second optical fiber bundle. The protective shell is fixedly installed in the puncture needle, and one end of the first optical fiber bundle and the second optical fiber bundle are both fixed on the protective shell.

[0010] Furthermore, the protective shell includes a fixing seat and an arc-shaped guide plate, the arc-shaped guide plate is symmetrically arranged at the front end of the fixing seat, and the arc-shaped guide plate is fixedly connected to the fixing seat.

[0011] Furthermore, the mounting frame includes a top plate and an elastic card frame mounted on the middle frame, and the elastic card frame is fixedly mounted on the lower end surface of the top plate.

[0012] Furthermore, a support frame connected to the top plate is disposed on the lower end surface of the display panel, and the support frame is fixedly connected to the display panel.

[0013] Furthermore, a plurality of reinforcing plates are evenly arranged between the outer plate and the outer insert tube.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the utility model installs a needle tube connector at one end of the puncture needle, which is convenient for connecting with the syringe through the needle tube connector, and at the same time, by arranging two optical fiber bundles in the puncture needle, it is ensured that one of the optical fiber bundles can be irradiated by the light source assembly during inspection, so that the irradiation is achieved through the optical fiber bundle, and the changes of the irradiated light are received and observed through the other optical fiber bundle. When the puncture needle drives the detection optical cable from one medium to another, the light reflection will change, and it can be quickly determined whether the yellow ligament is broken through to enter the epidural space. At the same time, the change of light can be visually displayed through the photoelectric conversion circuit and the display panel, which has the advantages of easy use and easy and precise control of the puncture position. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a three-dimensional diagram of the overall structure in the embodiment of the utility model;

[0017] Figure 2 It is a stereoscopic diagram of the puncture needle and the needle tube connector in the embodiment of the utility model matching each other;

[0018] Figure 3 yes Figure 2 a front view of the device shown;

[0019] Figure 4 yes Figure 1 A three-dimensional diagram of the detection optical cable, mounting frame, light source assembly, display panel and photoelectric conversion circuit;

[0020] Figure 5 yes Figure 1 A front view of the mounting frame, light source assembly, display panel and photoelectric conversion circuit shown in FIG.

[0021] Figure 6 yes Figure 1 A perspective view of the optical fiber detection cable shown.

[0022] In the figure: 1. puncture needle; 2. needle tube connector; 21. positioning center seat; 211. middle frame; 212. outer plate; 213. reinforcement plate; 22. outer insert; 23. sealing sleeve; 3. detection optical cable; 31. protective shell; 311. fixing seat; 312. arc guide plate; 32. first optical fiber bundle; 33. second optical fiber bundle; 4. mounting frame; 41. top plate; 42. elastic card frame; 5. light source assembly; 6. display panel; 61. support frame; 7. photoelectric conversion circuit. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents the selected embodiments of the utility model.

[0024] Reference Figure 1 , Figure 2 and Figure 3As shown, an epidural puncture needle with optical fiber includes a puncture needle 1 and a needle tube connector 2, the needle tube connector 2 is fixedly installed at the non-puncture end of the puncture needle 1, the needle tube connector 2 includes a positioning center seat 21, an outer insert tube 22 and a sealing sleeve 23 for installing the puncture needle 1, the outer insert tube 22 and the sealing sleeve 23 are respectively arranged on both sides of the positioning center seat 21, and the positioning center seat 21, the outer insert tube 22 and the sealing sleeve 23 are integrally formed, a detection optical cable 3 is fixedly installed in the puncture needle 1, a mounting frame 4 is fixedly engaged on the positioning center seat 21, a light source assembly 5 and a display panel 6 are fixedly arranged on the mounting frame 4, the light source assembly 5 is connected to one end of the detection optical cable 3, and the display panel 6 is connected to the other end of the detection optical cable 3 through a photoelectric conversion circuit 7. By fixing the needle tube connector 2 on the puncture needle 1, the syringe can be connected to the needle tube connector 2 for medication when it is convenient to use. By designing the needle tube connector 2 into a structure that matches the positioning center seat 21, the outer tube 22 and the sealing sleeve 23, the syringe can be connected through the outer tube 22 when in use, and the puncture needle 1 can be installed through the sealing sleeve 23, so that the syringe and the puncture needle 1 can be connected. By clamping and fixing the mounting frame 4 on the positioning center seat 21, the light source assembly 5 and the display panel 6 can be installed through the mounting frame 4 when it is convenient to use, ensuring that the detection optical cable 3 arranged in the puncture needle 1 can be irradiated by the light source assembly 5 when in use, and the display panel 6 and the photoelectric conversion circuit 7 are set to easily monitor the light changes in real time and display them in real time through the display panel 6.

[0025] Reference Figure 2 and Figure 3 As shown, the positioning center seat 21 includes a middle frame 211 and an outer plate 212, and the outer plate 212 is arranged on both sides of the middle frame 211, and the outer plate 212 is integrally formed with the middle frame 211. The outer plates 212 are arranged on both sides of the middle frame 211 by setting the structure of the positioning center seat 21, so that it is convenient to realize the limit fixation through the outer plates 212 on both sides after the mounting frame 4 is engaged on the middle frame 211, and ensure that the mounting frame 4 and the needle tube connector 2 can be stably connected. A plurality of reinforcing plates 213 are also evenly arranged between the outer plate 212 and the outer insert 22. The connection strength between the positioning center seat 21 and the outer insert 22 is increased by setting the reinforcing plate 213.

[0026] Reference Figure 4 and Figure 6As shown, the detection optical cable 3 includes a protective shell 31, a first optical fiber bundle 32 and a second optical fiber bundle 33, the protective shell 31 is fixedly installed in the puncture needle 1, and one end of the first optical fiber bundle 32 and the second optical fiber bundle 33 are fixed on the protective shell 31. The structural setting of the detection optical cable 3 ensures that one end of the first optical fiber bundle 32 and the second optical fiber bundle 33 are fixed in the puncture needle 1 through the protective shell 31, and ensures that the heads of the first optical fiber bundle 32 and the second optical fiber bundle 33 are opposite, so that it is convenient to receive the optical signal of the first optical fiber bundle 32 through the second optical fiber bundle 33, and when the puncture needle 1 punctures through the yellow ligament and enters the epidural cavity in actual use, the reflection of light will change, and then the corresponding puncture position can be accurately determined. The protective shell 31 includes a fixed seat 311 and an arc guide plate 312, the arc guide plate 312 is symmetrically arranged at the front end of the fixed seat 311, and the arc guide plate 312 is fixedly connected to the fixed seat 311. The protective shell 31 is structurally arranged to ensure that the two arc guide plates 312 are fixedly installed through the fixing seat 311, so that the first optical fiber bundle 32 and the second optical fiber bundle 33 can be conveniently pasted and fixed through the arc guide plates 312, and the heads of the first optical fiber bundle 32 and the second optical fiber bundle 33 can be guided by the arc guide plates 312 so that they can be used relative to each other.

[0027] Reference Figure 4 and Figure 5 As shown, the mounting frame 4 includes a top plate 41 and an elastic clamping frame 42 mounted on the middle frame 211, and the elastic clamping frame 42 is fixedly mounted on the lower end surface of the top plate 41. The structural setting of the mounting frame 4 ensures that the top plate 41 can be clamped and fixed on the middle frame 211 through the elastic clamping frame 42 at the lower end during installation, thereby facilitating rapid installation and stable use.

[0028] Reference Figure 4 and Figure 5 As shown, the lower end surface of the display panel 6 is provided with a support frame 61 connected to the top plate 41, and the support frame 61 is fixedly connected to the display panel 6. By providing the support frame 61 on the lower end surface of the display panel 6, the display panel 6 can be stably fixed on the top plate 41 through the support frame 61, and the operator can observe better when it is easy to use.

[0029] Working principle: When actually using the puncture, first install the device on the syringe through the external tube 22, and slowly puncture through the puncture needle 1. When puncturing the yellow ligament, power on the light source assembly 5, the photoelectric conversion circuit 7 and the display panel 6 (can be powered by a built-in micro battery or an external power supply), and then observe the display panel 6. When the puncture needle 1 breaks through the yellow ligament and enters the epidural space, the reflection of the light will change, and then the light received by the second optical fiber bundle 33 will change. The change in light can be presented on the display panel 6 in digital or other ways through the photoelectric conversion circuit 7, so based on this point, it can be quickly determined whether the epidural space has been entered.

[0030] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An epidural puncture needle with an optical fiber, comprising a puncture needle (1) and a needle tube connector (2), wherein the needle tube connector (2) is fixedly mounted on the non-puncture end of the puncture needle (1), characterized in that: The needle tube connector (2) comprises a positioning center seat (21), an outer insert tube (22) and a sealing sleeve (23) for mounting a puncture needle (1); the outer insert tube (22) and the sealing sleeve (23) are arranged on both sides of the positioning center seat (21), and the positioning center seat (21), the outer insert tube (22) and the sealing sleeve (23) are integrally formed; a detection optical cable (3) is fixedly mounted in the puncture needle (1); a mounting frame (4) is fixedly engaged on the positioning center seat (21); a light source assembly (5) and a display panel (6) are fixedly mounted on the mounting frame (4); the light source assembly (5) is connected to one end of the detection optical cable (3), and the display panel (6) is connected to the other end of the detection optical cable (3) via a photoelectric conversion circuit (7).

2. An epidural puncture needle with optical fiber according to claim 1, characterized in that: The positioning center seat (21) comprises a middle frame (211) and an outer plate (212), wherein the outer plate (212) is arranged on both sides of the middle frame (211), and the outer plate (212) and the middle frame (211) are integrally formed.

3. An epidural puncture needle with optical fiber according to claim 2, characterized in that: The detection optical cable (3) comprises a protective shell (31), a first optical fiber bundle (32) and a second optical fiber bundle (33); the protective shell (31) is fixedly installed in the puncture needle (1); one end of the first optical fiber bundle (32) and the second optical fiber bundle (33) are both fixed on the protective shell (31).

4. The epidural puncture needle with optical fiber according to claim 3, characterized in that: The protective shell (31) comprises a fixing seat (311) and an arc-shaped guide plate (312), wherein the arc-shaped guide plate (312) is symmetrically arranged at the front end of the fixing seat (311), and the arc-shaped guide plate (312) is fixedly connected to the fixing seat (311).

5. The epidural puncture needle with optical fiber according to claim 4, characterized in that: The mounting frame (4) comprises a top plate (41) and an elastic card frame (42) mounted on the middle frame (211); the elastic card frame (42) is fixedly mounted on the lower end surface of the top plate (41).

6. An epidural puncture needle with optical fiber according to claim 5, characterized in that: A support frame (61) connected to the top plate (41) is provided on the lower end surface of the display panel (6), and the support frame (61) is fixedly connected to the display panel (6).

7. An epidural puncture needle with optical fiber according to claim 6, characterized in that: A plurality of reinforcing plates (213) are evenly arranged between the outer plate (212) and the outer insert tube (22).

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