Transperineal prostate needle set

Abstract

The utility model relates to medical instrument technical field discloses a needle head suit for transperineal prostate puncture anesthesia, including needle head bushing, the inside bushing of needle head bushing is inserted with needle core, the top of needle head bushing is provided with needle head subassembly, the bottom fixed connection of needle head bushing has elliptical hollow casing, the bottom surface left and right sides of elliptical hollow casing are all provided with round hole, the inside of elliptical hollow casing is provided with round plate, the outside of round plate is provided with limiting unit, the right side surface fixed connection of needle head bushing has indication mark. In the utility model, through setting up right angle needle head, can carry out the needle in parallel with perineal area surface skin direction, and can complete administration simultaneously with the needle, through setting up long needle head and the cooperation of side hole, can carry out multipoint anesthesia when carrying out envelope anesthesia, both can reduce the needle frequency, and guarantee the uniform injection of anesthetic, effectively guarantee the anesthesia range, reduce the pain of patient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a needle kit for transperineal prostate puncture anesthesia. Background Technology

[0002] Transperineal prostate biopsy is the mainstream method for diagnosing prostate cancer in clinical practice. Anesthesia methods include local anesthesia + nerve block anesthesia, spinal anesthesia, and general anesthesia. Among these, local anesthesia + nerve block anesthesia is the most frequently used anesthesia method for transperineal prostate biopsy due to its advantages such as low requirements on the patient's physical condition, low risk, and ease of operation. The main anesthetic sites for local anesthesia + nerve block anesthesia can be divided into three parts: 1. the perineal skin; 2. the prostate capsule and the tissue between the capsule and the perineal skin; 3. the neurovascular bundles on both sides of the prostate.

[0003] Currently, in clinical practice, perineal surface anesthesia mainly uses ordinary needles from 10ml syringes. However, due to the location of the perineum and the patient's lithotomy position during anesthesia, the anesthesiologist can only insert the needle perpendicular to the perineal surface skin. This causes great inconvenience for the anesthesiologist and can lead to uneven injection of anesthetic, compromising the anesthetic effect. Furthermore, in clinical practice, when performing anesthesia on the prostate capsule and the tissue between the capsule and the perineal skin, 5ml or 10ml syringe needles are typically used. This requires separate anesthesia of the prostate capsule and the tissue between the capsule and the perineal skin, resulting in numerous needle insertions. Additionally, in obese patients, ordinary syringe needles may not reach the capsule. Moreover, in clinical practice, nerve block anesthesia for the peripheral nerve and vascular bundles on both sides of the prostate mainly uses spinal anesthesia needles or other deep tissue anesthesia needles. However, these types of needles vary in hardness and thickness, compromising anesthetic effectiveness. Furthermore, since they are not specifically designed for prostate puncture, they also lead to waste of other items in the puncture kit. Therefore, a needle kit for perineal prostate puncture anesthesia is proposed to address these problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a needle kit for transperineal prostate puncture anesthesia, which aims to improve the inconvenience of using needles for transperineal prostate puncture anesthesia in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a needle kit for transperineal prostate puncture anesthesia, comprising a needle sheath, a needle core inserted inside the needle sheath, a needle assembly disposed above the needle sheath, an elliptical hollow shell fixedly connected to the bottom of the needle sheath, circular holes being provided on both the left and right sides of the bottom surface of the elliptical hollow shell, a circular plate disposed inside the elliptical hollow shell, a limiting unit disposed on the outer side of the circular plate, the limiting unit being used to limit the circular plate, and an indicator mark fixedly connected to the right side surface of the needle sheath.

[0006] As a further description of the above technical solution:

[0007] The interior of the elliptical hollow shell is connected to the interior of the needle sheath.

[0008] As a further description of the above technical solution:

[0009] The diameter of the circular plate is larger than the diameter of the circular hole, and the bottom surface of the circular plate is provided with anti-slip texture.

[0010] As a further description of the above technical solution:

[0011] The limiting unit includes an iron ring, which is fixedly connected to the outside of the circular plate. Magnetic strips are fixedly connected to the inner wall surfaces of both sides of the elliptical hollow shell, and the magnetic strips are embedded in the inner wall of the elliptical hollow shell.

[0012] As a further description of the above technical solution:

[0013] The iron ring is fitted onto the outside of the circular plate, and the iron ring is slidably connected to the inside of the elliptical hollow shell.

[0014] As a further description of the above technical solution:

[0015] The needle assembly includes a right-angled needle, which is fixedly connected to the upper surface of the needle sleeve.

[0016] As a further description of the above technical solution:

[0017] The needle assembly includes a long needle, which is fixedly connected to the upper surface of the needle sleeve, and a side hole is formed on the outer wall surface of the long needle.

[0018] As a further description of the above technical solution:

[0019] The needle assembly includes a straight needle, which is fixedly connected to the upper surface of the needle sleeve, and the outer wall surface of the straight needle is provided with graduations.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the right-angled needle allows for insertion parallel to the surface skin of the perineal area, and drug administration can be completed simultaneously with needle insertion. The combination of the long needle and side hole allows for multi-point anesthesia during capsular anesthesia. Both reduce the number of needle insertions and ensure uniform injection of anesthetic, effectively guaranteeing the anesthetic range, reducing patient discomfort, and are applicable to various situations of prostate local anesthesia and nerve block anesthesia, ensuring anesthetic effect and avoiding unnecessary waste of resources.

[0022] 2. In this utility model, the bevel of the straight needle can be positioned by the set indicator mark to determine the direction of drug administration. Through the cooperation of the set elliptical hollow shell, round hole, round plate and limiting unit, the bottom of the needle sleeve can be quickly sealed after the needle core is pulled out and the connection between the syringe and the needle sleeve cannot be completed immediately, so as to avoid dust and impurities entering the needle sleeve and causing contamination and affecting the injection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall assembly of a needle kit for transperineal prostate puncture anesthesia proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the elliptical hollow shell of a needle set for transperineal prostate puncture anesthesia proposed in this utility model.

[0025] Figure 3 This is a schematic diagram showing the partial cross-section of the elliptical hollow shell of a needle kit for transperineal prostate puncture anesthesia proposed in this utility model.

[0026] Figure 4 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0027] Figure 5 This is a schematic diagram of the overall structure of the third embodiment of the present utility model.

[0028] Legend:

[0029] 1. Needle sheath; 2. Needle core; 3. Needle assembly; 4. Elliptical hollow shell; 5. Round hole; 6. Round plate; 7. Limiting unit; 71. Iron ring; 72. Magnetic strip; 8. Right-angle needle; 9. Long needle; 10. Side hole; 11. Straight needle; 12. Scale; 13. Indicator mark. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1:

[0032] Reference Figures 1-3 This utility model provides an embodiment of a needle kit for transperineal prostate puncture anesthesia, comprising a needle cannula 1, with a needle core 2 inserted inside the needle cannula 1. The needle core 2 can seal the inside of the needle cannula 1 during needle insertion, reducing contamination. A needle assembly 3 is provided above the needle cannula 1, including a right-angle needle 8, which is fixedly connected to the upper surface of the needle cannula 1. The right-angle design of the right-angle needle 8 allows the anesthesiologist to insert the needle parallel to the surface of the perineal area when performing anesthesia, allowing for simultaneous drug administration. This reduces the number of needle insertions while ensuring uniform injection of anesthetic, effectively guaranteeing the anesthesia range, reducing patient discomfort, and improving the anesthetic effect. An elliptical hollow shell 4 is fixedly connected to the bottom of the needle cannula 1, with the interior of the elliptical hollow shell 4 communicating with the interior of the needle cannula 1. Circular holes 5 are provided on both the left and right sides of the bottom surface of the elliptical hollow shell 4, through which the needle core 2 can be inserted into the needle cannula 1.

[0033] The elliptical hollow shell 4 has a circular plate 6 inside. The diameter of the circular plate 6 is larger than the diameter of the circular hole 5, so the circular plate 6 will not fall out of the circular hole 5. At the same time, the upper and lower surfaces of the circular plate 6 are in contact with the inner wall of the elliptical hollow shell 4, so that the circular plate 6 will not wobble up and down. The bottom surface of the circular plate 6 is provided with anti-slip texture, which can increase the friction between the user's fingers and the circular plate 6 and reduce slippage. The right side surface of the needle cannula 1 is fixedly connected with an indicator mark 13.

[0034] A limiting unit 7 is provided on the outer side of the circular plate 6. The limiting unit 7 includes an iron ring 71, which is sleeved and fixedly connected to the outer side of the circular plate 6. The iron ring 71 is slidably connected to the inside of the elliptical hollow shell 4. Magnetic strips 72 are fixedly connected to the inner wall surfaces on both sides of the elliptical hollow shell 4. The magnetic strips 72 are embedded in the inner wall of the elliptical hollow shell 4. The magnetic strips 72 and the iron ring 71 are magnetically attracted to each other, thereby limiting the circular plate 6. When the circular plate 6 is placed on the left side inside the elliptical hollow shell 4, the iron ring 71 is magnetically attracted to the magnetic strip 72 on the left side, so that the circular plate 6 is placed stably. When the needle core 2 is pulled out and the connection between the injection syringe and the needle cannula 1 cannot be completed immediately, the circular plate 6 can be pushed to the right side inside the elliptical hollow shell 4, so that the iron ring 71 is magnetically attracted to the magnetic strip 72 on the right side, thereby allowing the circular plate 6 to stably seal the bottom of the needle cannula 1, preventing dust and impurities from entering the needle cannula 1 and causing contamination that affects the injection.

[0035] Example 2:

[0036] Reference Figure 4 The difference between Embodiment 2 and Embodiment 1 is that the right-angled needle 8 in Embodiment 1 is replaced with a long needle 9. The needle assembly 3 includes a long needle 9, which is longer than a standard 5ml or 10ml syringe. The needle tip can easily reach the capsule and administer medication. The long needle 9 is fixedly connected to the upper surface of the needle sheath 1. The outer wall surface of the long needle 9 has two side holes 10, which are staggered on the front and rear sides of the long needle 9. While the needle tip touches the capsule for capsule anesthesia, the presence of the two side holes 10 allows the anesthetic to simultaneously enter the tissue between the capsule and the perineal skin, anesthetizing the tissue around the needle insertion tract. This effectively reduces the number of needle insertions required for anesthesia in this area. In addition, when using this needle for anesthesia, it can ensure that the anesthetic injection depth is always the capsule, 1cm from the capsule, and 2cm from the capsule, resulting in uniform anesthetic injection and good anesthetic effect.

[0037] Example 3:

[0038] Reference Figure 5 The difference between Embodiment 3 and Embodiment 1 is that the right-angle needle 8 in Embodiment 1 is replaced with a straight needle 11. The needle assembly 3 includes a straight needle 11, which is fixedly connected to the upper surface of the needle sleeve 1. The outer wall surface of the straight needle 11 is provided with a scale 12. The position of the indicator mark 13 relative to the needle sleeve 1 is consistent with the direction of the bevel of the needle tip of the straight needle 11. The direction of the bevel of the needle tip can be determined by the indicator mark 13 before administering the drug.

[0039] Working principle: The patient is in the lithotomy position, an ultrasound probe is inserted into the rectum, and anesthesia begins after disinfection and draping. Using the structure in Example 1, a 5ml or 10ml syringe is connected to the needle cannula 1 to perform surface skin anesthesia of the perineal area (the anesthesia range is determined according to the projected area of ​​the prostate on the perineal surface). The right-angle needle 8 can be inserted at an angle parallel to the perineal skin. After insertion, the needle tip can move along the subcutaneous tissue. One insertion can administer anesthesia to the area around the needle tip, effectively reducing the number of needle insertions in this area.

[0040] Then, the structure in Example 2 was changed to anesthetize the prostate capsule and the tissue between the capsule and the perineal skin. The needle was inserted perpendicularly to the anesthetized perineal skin. When the tip of the long needle 9 touched the capsule, the drug was administered. The drug solution could be discharged simultaneously through the tip of the long needle 9 and the side hole 10, thus anesthetizing the capsule and the tissue between the capsule and the perineal skin (i.e., the needle insertion channel). Then, the capsule was anesthetized at multiple points in stages. The use of the long needle effectively reduced the total number of needle insertions, and the anesthetic was distributed more evenly according to the distance between the needle tip and the two side holes 10, resulting in a better anesthetic effect.

[0041] Finally, the structure in Example 3 was changed to perform prostate nerve block anesthesia. First, the neurovascular bundle on one side was located under color Doppler ultrasound imaging. The straight needle 11 was inserted vertically at the corresponding point in the perineal area. After the needle tip reached the neurovascular bundle, the needle core 2 was pulled out. After the syringe was aspirated and no blood was drawn, the syringe was connected to the needle cannula 1 to administer the drug. The direction of drug administration was determined according to the positional relationship between the indicator mark 13 and the neurovascular bundle. After recording the depth of insertion, the needle was withdrawn. Similarly, the contralateral neurovascular bundle anesthesia was performed at the same depth.

[0042] After the straight needle 11 completes insertion, if the syringe and needle sleeve 1 cannot be connected immediately when the needle core 2 is pulled out, the circular plate 6 can be pushed to the right so that the iron ring 71 and the magnetic strip 72 on the right side can be magnetically attracted. At this time, the circular plate 6 is stably located at the bottom of the needle sleeve 1 and can be sealed to prevent dust and impurities from entering the needle sleeve 1 and causing contamination.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A needle kit for transperineal prostate puncture anesthesia, comprising a needle cannula (1), characterized in that: A needle core (2) is inserted inside the needle sleeve (1). A needle assembly (3) is provided above the needle sleeve (1). An elliptical hollow shell (4) is fixedly connected to the bottom of the needle sleeve (1). Circular holes (5) are provided on both the left and right sides of the bottom surface of the elliptical hollow shell (4). A circular plate (6) is provided inside the elliptical hollow shell (4). A limiting unit (7) is provided on the outside of the circular plate (6). The limiting unit (7) is used to limit the circular plate (6). An indicator mark (13) is fixedly connected to the right side surface of the needle sleeve (1).

2. The needle kit for transperineal prostate puncture anesthesia according to claim 1, characterized in that: The interior of the elliptical hollow shell (4) is connected to the interior of the needle tube (1).

3. A needle kit for transperineal prostate puncture anesthesia according to claim 1, characterized in that: The diameter of the circular plate (6) is larger than the diameter of the circular hole (5), and the bottom surface of the circular plate (6) is provided with anti-slip texture.

4. A needle kit for transperineal prostate puncture anesthesia according to claim 1, characterized in that: The limiting unit (7) includes an iron ring (71), which is fixedly connected to the outside of the circular plate (6). Magnetic strips (72) are fixedly connected to the inner wall surfaces of the left and right sides of the elliptical hollow shell (4), and the magnetic strips (72) are embedded in the inner wall of the elliptical hollow shell (4).

5. A needle kit for transperineal prostate puncture anesthesia according to claim 4, characterized in that: The iron ring (71) is fitted onto the outside of the circular plate (6), and the iron ring (71) is slidably connected to the inside of the elliptical hollow shell (4).

6. A needle kit for transperineal prostate puncture anesthesia according to claim 1, characterized in that: The needle assembly (3) includes a right-angle needle (8), which is fixedly connected to the upper surface of the needle sleeve (1).

7. A needle kit for transperineal prostate puncture anesthesia according to claim 1, characterized in that: The needle assembly (3) includes a long needle (9), which is fixedly connected to the upper surface of the needle sleeve (1), and a side hole (10) is provided on the outer wall surface of the long needle (9).

8. A needle kit for transperineal prostate puncture anesthesia according to claim 1, characterized in that: The needle assembly (3) includes a straight needle (11), which is fixedly connected to the upper surface of the needle sleeve (1), and the outer wall surface of the straight needle (11) is provided with a scale (12).

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