CN202665704U - Epidural puncture positioning indicator - Google Patents

Abstract

The utility model relates to the technical field of epidural puncture location, in particular to an epidural space puncture location indicator. The multifunctional puncture needle comprises a needle core and a needle core pedicle, wherein the needle core is a hollow tube which is provided with a tube cavity penetrating through the needle core, the upper end part of the needle core is connected with the needle core pedicle provided with a cavity, and the lower end of the needle core pedicle is connected with an observation tube made of a transparent material. The proper amount of liquid is injected into the observation cavity of the observation tube to form a liquid column, when the puncture needle reaches the epidural cavity, the liquid column moves under the action of pressure difference due to the negative pressure of the epidural cavity, and then the puncture needle can be known to reach the epidural cavity, and the needle insertion is stopped. Therefore, the positioning indicator does not need to repeatedly draw out the needle core and then connect with a wave tube or an injector for repeated test positioning in the operation process, reduces the complexity of operation, improves the puncture efficiency and reduces errors, and has more obvious effect on beginners. Meanwhile, whether the puncture needle reaches an epidural space or not can be synchronously judged in the process of needle insertion, and the accuracy of puncture is improved.

Description

Epidural puncture positioning indicator

technical field

The utility model relates to the technical field of epidural puncture, in particular to an epidural cavity puncture positioning indicator used in conjunction with a puncture needle.

Background technique

Nowadays, epidural nerve block anesthesia is a frequently used anesthesia method, and a very important step in this anesthesia method is to accurately puncture the epidural puncture needle into the epidural space. If the puncture needle is inserted too shallowly, anesthesia will fail, and if the needle is inserted too deeply, the spinal cord may be damaged and the patient may be harmed. In order to make needle insertion more accurate, in recent years, anesthesia medical workers have proposed positioning indication methods such as air vesicle indication method and pressure measurement and alarm method based on a large number of clinical studies. However, these methods have obvious defects and are difficult to operate in practice.

The Chinese patent publication number is CN2244917Y, and the patent document entitled "Epidural Puncture Needle" discloses a kind of epidural puncture needle, which includes a needle body and a solid needle core for preventing the needle tube from clogging. In the actual operation process, In order to achieve accurate positioning, during the puncture operation, the puncture needle is advanced for a certain distance, then the needle core is drawn out, and then connected to the wave tube or syringe for positioning testing. If it does not reach, it is necessary to insert the needle core and continue to advance for a certain distance before repeating the above operation . Although this method can be used to determine whether the puncture needle has reached the epidural space, it is cumbersome to operate because it needs to repeatedly pull out the needle core and then connect it to the wave tube or syringe to repeatedly test the positioning. At the same time, because it is not possible to judge whether the puncture needle has reached the epidural space synchronously during the needle insertion process, the needle may be inserted too deep during the last needle insertion process, and the defect is obvious.

Contents of the invention

The technical problem to be solved by the utility model is to provide an epidural puncture positioning indicator, so that it is not necessary to repeatedly pull out the needle core and then connect the wave tube or syringe to repeatedly test the positioning during the puncture process, and at the same time, it can realize the synchronous judgment of the puncture during the needle insertion process Whether the needle has reached the epidural space.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: the epidural space puncture positioning indicator includes a needle core and a needle core pedicle, and the needle core is a hollow tube provided with a lumen passing through the needle core. The upper end of the needle core is connected with the needle core pedicle with a cavity, the upper end of the needle core pedicle is connected with an observation tube made of transparent material, and the observation tube is provided with an observation cavity passing through the observation tube. The lumen of the core, the cavity of the needle core pedicle and the observation cavity of the observation tube are connected in sequence.

Preferably, the needle core pedicle is integrally formed with the observation tube.

Wherein, the outer wall of the observation tube is provided with anti-skid lines.

Wherein, the cavity wall of the observation cavity of the observation tube is provided with anti-flow lines to prevent the liquid from flowing by itself.

Wherein, the lower end of the needle core pedicle is provided with an annular groove matching with the needle tube pedicle of the puncture needle.

Wherein, the length of the observation tube is 2cm-5cm.

Wherein, a ventilation hole is opened on the side wall of the upper end of the observation tube, and the ventilation hole communicates with the observation cavity.

Wherein, the inner diameter of the upper end of the observation tube matches the outer diameter of the syringe connector.

Wherein, the lower end of the needle core is provided with two or more through holes.

The beneficial effect of the utility model is that the utility model provides an epidural cavity puncture positioning indicator for use with a puncture needle, including a needle core and a needle core pedicle, and the needle core is a tube provided with a needle core The hollow tube of the cavity, the upper end of the needle core is connected with the needle core pedicle with a cavity, the upper end of the needle core pedicle is connected with an observation tube made of transparent material, and the observation tube is provided with a hole through the observation tube The observation cavity, the tube cavity of the needle core, the cavity of the needle core pedicle and the observation cavity of the observation tube are connected in sequence. When using, first inject an appropriate amount of liquid into the observation cavity of the observation tube, such as physiological saline, the liquid forms a liquid column in the observation cavity due to the effect of surface tension, and at the same time insert the needle core into the needle tube of the puncture needle When the puncture needle reaches the epidural space, due to the negative pressure in the epidural space and the hollow core, the lumen of the core, the cavity of the pedicle of the core and the observation cavity of the observation tube They are connected sequentially, so the liquid column will move under the action of the pressure difference. The movement of the liquid column can be clearly observed on the observation tube. At this time, it can be known that the puncture needle has reached the epidural space, and the operator stops inserting the needle immediately. Therefore, during the puncture process, the positioning indicator does not need to repeatedly pull out the needle core and then connect the wave tube or syringe to repeatedly test the positioning, which reduces the complexity of the operation, improves the puncture efficiency and reduces mistakes, and is more effective for beginners. At the same time, it can be realized that whether the puncture needle has reached the epidural space can be synchronously judged during the needle insertion process, and the accuracy of puncture can be improved.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the utility model embodiment one. the

Fig. 2 is a schematic cross-sectional structure diagram of Embodiment 1 of the present invention when used in conjunction with a syringe.

Fig. 3 is a schematic cross-sectional structure diagram of Embodiment 2 of the present invention when used in combination with a syringe.

Fig. 4 is a schematic cross-sectional structure diagram of Embodiment 2 of the present invention when used with a puncture needle.

Fig. 5 is a schematic cross-sectional structure diagram of Embodiment 3 of the present invention when used with a puncture needle.

Fig. 6 is a schematic cross-sectional structure diagram of Embodiment 4 of the present invention when used with a puncture needle.

Fig. 7 is a schematic cross-sectional structure diagram of Embodiment 5 of the present utility model when used with a puncture needle. the

Detailed ways

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the utility model.

As shown in Figures 1 and 2, Embodiment 1 of the epidural puncture positioning indicator described in the present invention includes a needle core 1 and a needle core pedicle 2, and the needle core 1 is provided with a through needle core 1 The hollow tube of the lumen 3, the upper end of the needle core 1 is connected with the needle core pedicle 2 with a cavity 4, the lower end of the needle core 2 is connected with an observation tube 5 made of transparent material, the The observation tube 5 is provided with an observation chamber 6 passing through the observation tube 5, and the lumen 3 of the needle core 1, the cavity 4 of the needle core 2 and the observation cavity 6 of the observation tube 5 are connected in sequence.

When in use, first check whether the positioning indicator is unobstructed and well-sealed. The following methods can be used, such as injecting gas or liquid with a syringe for detection. When injecting gas, block other air holes in the observation chamber 6 with fingers or plugs, and press the syringe. To detect whether the positioning indicator is unobstructed and airtight. After the detection is good, inject an appropriate amount of liquid into the observation chamber 6 of the observation tube 5, such as physiological saline, and the liquid forms a liquid column in the observation chamber 6 due to the surface tension; then insert the positioning indicator into the needle tube of the puncture needle , and then slowly push the puncture needle into the subcutaneous area of the human body. When the puncture needle reaches the epidural space, due to the negative pressure in the epidural space, and because the needle core 1 is hollow, the lumen 3 of the needle core 1, the needle core The cavity 4 of the pedicle 2 and the observation cavity 6 of the observation tube 5 are connected in sequence, so the liquid column will move under the action of the pressure difference, and the movement of the liquid column can be clearly observed on the observation tube 5, and at this time, the puncture can be known. The needle has reached the epidural space, and the operator stops inserting the needle. Therefore, during the puncture process, the positioning indicator does not need to repeatedly pull out the needle core and then connect the wave tube or syringe to repeatedly test the positioning, which reduces the complexity of the operation, improves the puncture efficiency and reduces mistakes, and is more effective for beginners. At the same time, it can be realized that whether the puncture needle has reached the epidural space can be synchronously judged during the needle insertion process, and the accuracy of puncture can be improved.

In this embodiment, the lower end of the needle core pedicle 2 is provided with an annular groove 10 matching with the needle tube pedicle 11 of the puncture needle, as shown in FIG. 1 . When the needle core 1 is inserted into the needle tube, the needle tube pedicle 11 of the puncture needle can just fit into the needle core pedicle 2, so that a good sealing performance is maintained between the puncture needle and the positioning indicator, and the reliability of positioning is improved. At the same time, it is also beneficial to the mutual combination of the positioning indicator and the puncture needle, which is convenient for operation and observation. Of course, it can also be set as a square groove or a groove of other shapes, as long as it matches with the needle tube pedicle 11 of the puncture needle.

In this embodiment, a preferred implementation manner is that the length of the observation tube 5 is 2 cm. The length is moderate, which can achieve a good observation effect, and at the same time, it will not be too long to affect the operation of pushing the needle. In addition, the length of the observation tube 5 can also be 3 cm, 5 cm or any other value between 2 cm and 5 cm, as long as the length of the observation tube can meet the observation requirements.

In this embodiment, the inner diameter of the upper end of the observation tube 5 matches the outer diameter of the syringe connector 9 . Since it is generally necessary to use a syringe to test the performance of the positioning indicator before the puncture operation, the inner diameter of the upper end of the observation tube 5 is matched with the outer diameter of the syringe connector 9 .

In this embodiment, two through holes 8 are opened at the lower end of the needle core 1 . By opening more through-holes 8 in the front section of the needle core 1, it is avoided that some through-holes 8 are blocked during the needle insertion process, causing the pressure difference cannot be generated when the puncture needle reaches the epidural space, and the liquid column does not move to cause positioning. Indicator failure, the practicability of this embodiment is stronger. Of course, in order to obtain a better effect, three or more through holes 8 can also be provided.

As shown in Figure 3 and Figure 4, Embodiment 2 of the epidural cavity puncture positioning indicator of the present invention is different from the above Embodiment 1 in that: the side wall of the upper end of the observation tube 5 is provided with a ventilation hole 7. The air hole 7 communicates with the observation cavity 6 . Due to the setting of the vent hole 7, even if the upper end of the observation tube 5 is blocked, the observation cavity 6 can still communicate with the atmosphere, so that when the puncture needle reaches the epidural space, the liquid column can move correctly, so the hand can be moved during the needle insertion process. Pressing on the upper end of the observation tube 5 makes the push needle operation more convenient, and also prevents the operator from failing to connect the observation chamber 6 to the atmosphere due to previous operating habits, thereby making the positioning indicator unable to achieve the positioning indication effect, and improving the positioning. The operability and practicality of the indicator. Both the upper end side wall and the upper end of the observation tube 5 can be ventilated, so that it is suitable for holders with different operating techniques and has stronger practicability.

As shown in Figure 5, it is the third embodiment of the epidural cavity puncture positioning indicator of the present invention. Flowy anti-rye lines. In this embodiment, the anti-flow pattern is wavy, and the surface tension of the liquid is used to prevent the liquid column from flowing freely in the observation chamber 6, thereby avoiding misjudgment and improving the accuracy of positioning indication.

As shown in FIG. 6 , the fourth embodiment of the epidural puncture positioning indicator of the present invention is different from the third embodiment above in that: the outer wall of the observation tube 5 is provided with anti-skid lines. The frictional force between the finger and the observation tube 5 is increased by the anti-skid pattern, which facilitates force when pushing the needle and makes the operation of pushing the needle easier. In this embodiment, the anti-slip lines are wavy anti-slip lines, which facilitates pushing the needle and does not affect the observation of the liquid column. Of course, the anti-slip lines can also be strip-shaped anti-slip lines or other anti-slip lines.

The anti-flow pattern shown in this embodiment is in the shape of a square wave, which is more convenient for observation while avoiding the free flow of liquid.

As shown in Figure 7, it is the most preferred embodiment five of the epidural cavity puncture positioning indicator of the present invention, which is different from the above embodiment four in that: the needle core pedicle 2 and the observation tube 5 are integrally formed. In the process, there is no need to assemble and connect the observation tube 5 and the needle core pedicle 2, which further simplifies the processing procedure, reduces the production cost of the positioning indicator, and improves its production efficiency; The problem of inaccurate positioning caused by the loose connection between 2 makes the positioning indication function of the positioning indicator more reliable.

The above-mentioned embodiment is the preferred realization scheme of the utility model, besides, the utility model can also be realized in other ways, and any obvious replacement is within the scope of protection of the utility model without departing from the concept of the present invention .

Claims (9)

1. cavum epidural puncture register guide, include nook closing member (1) and the nook closing member base of a fruit (2), it is characterized in that: described nook closing member (1) is for offering the hollow pipe of the tube chamber (3) that connects nook closing member (1), described nook closing member (1) upper end is connected with the nook closing member base of a fruit (2) that offers cavity (4), the upper end of the described nook closing member base of a fruit (2) is connected with the observing tube (5) of being made by transparent material, described observing tube (5) offers the observation chamber (6) that connects observing tube (5), the tube chamber (3) of described nook closing member (1), the cavity (4) of the nook closing member base of a fruit (2) and the observation chamber (6) of observing tube (5) are communicated with successively.

2. cavum epidural puncture register guide according to claim 1 is characterized in that: the described nook closing member base of a fruit (2) is one-body molded with observing tube (5).

3. cavum epidural puncture register guide according to claim 1, it is characterized in that: the outer wall of described observing tube (5) is provided with anti-slip veins.

4. cavum epidural puncture register guide according to claim 1 is characterized in that: the chamber wall of the observation chamber (6) of described observing tube (5) is provided with the anti-flow liner that prevents that liquid from flowing voluntarily.

5. cavum epidural puncture register guide according to claim 1 is characterized in that: the bottom of the described nook closing member base of a fruit (2) is provided with the annular groove (10) with the puncture needle tubing base of a fruit (11) coupling.

6. cavum epidural puncture register guide according to claim 1, it is characterized in that: the length of described observing tube (5) is 2cm～5cm.

7. cavum epidural puncture register guide according to claim 1, it is characterized in that: the upper end sidewall of described observing tube (5) offers passage (7), and described passage (7) is communicated with observation chamber (6).

8. cavum epidural puncture register guide according to claim 1, it is characterized in that: the external diameter of the internal diameter of the upper end of described observing tube (5) and syringe union joint (9) is complementary.

9. cavum epidural puncture register guide according to claim 1, it is characterized in that: the lower end of described nook closing member (1) offers two or more through hole (8).

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