Pneumoperitoneum exhaust needle

Abstract

The utility model relates to a pneumoperitoneum exhaust needle which comprises a cylinder body and a pricking needle, the head of the cylinder body is provided with a connector, a limiting ring is fixed in the connector, a through notch is formed in the middle of the limiting ring, an adjusting cap is rotationally installed on the cylinder body, a threaded hole which is through inside and outside is formed in the middle of the adjusting cap, and the pricking needle penetrates through the threaded hole and the notch and extends to the outside. The pricking needle is provided with an external thread, the external thread is matched with the thread of the threaded hole, the pricking needle is fixedly sleeved with a limiting block, the limiting block is limited in the notch, and the outer wall of the limiting block is tightly attached to the inner wall of the notch in a sliding mode. By screwing the adjusting cap, under the threaded connection action of the external thread and the threaded hole, the external thread and the limiting block can be driven to perform sliding adjustment along the notch, and by screwing the adjusting cap forwards and reversely, the telescopic adjustment of the pricking needle can be realized, so that the extension length of the pricking needle can be adjusted, and patients with different body types can use the pricking needle conveniently; and the condition that viscera are punctured is avoided, and the universality is high.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a pneumoperitoneum exhaust needle. Background Art

[0002] Endoscopic full-thickness resection refers to the removal of the tumor together with the entire layer of the digestive tract wall in order to completely remove lesions originating from the digestive tract wall, especially the deep layer of the muscularis propria. This endoscopic resection method is named endoscopic full-thickness resection. However, endoscopic resection is accompanied by active perforation. The operating physician will use a 20ml syringe to exhaust the patient's abdominal wall to reduce abdominal pressure.

[0003] When using a traditional 20ml syringe to vent air after puncture, the puncture needle length is fixed and cannot be adjusted for obese or thin patients. After the abdominal pressure drops, the needle may pierce other organs, bringing certain risks. In addition, the syringe barrel cannot be fixed and often requires an assistant nurse to support it with his hands. Utility Model Content

[0004] The utility model aims to provide a pneumoperitoneum exhaust needle with a retractable and adjustable needle head, which effectively solves the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0006] A pneumoperitoneum exhaust needle comprises a cylinder and a puncture needle. The cylinder head is provided with a connecting head, a limiting ring is fixed in the connecting head, a through slot is arranged in the middle of the limiting ring, an adjusting cap is rotatably mounted on the cylinder, a threaded hole that passes through inside and outside is arranged in the middle of the adjusting cap, the puncture needle passes through the threaded hole and the slot and extends to the outside, an external thread is arranged on the puncture needle, the external thread matches the thread of the threaded hole, a limiting block is fixedly sleeved on the puncture needle, the limiting block is limited in the slot, and the outer wall of the limiting block is tightly slidably fitted with the inner wall of the slot.

[0007] It can be seen that by screwing the adjusting cap, under the action of the threaded connection between the external thread and the threaded hole, the external thread and the limit block can be driven to slide and adjust along the slot, and by screwing the adjusting cap forward and reverse, the telescopic adjustment of the puncture needle can be achieved, and then the extended length of the puncture needle can be adjusted to facilitate use by patients of different body sizes and avoid puncturing of internal organs, with high versatility.

[0008] Furthermore, the cross section of the notch is rectangular, and the cross section of the limiting block is rectangular matching the notch.

[0009] The notch and the limit block are arranged in mutually matching rectangular shapes, which can play a guiding and limiting role for the needle, thereby preventing the needle from rotating along with the adjusting cap and failing to achieve telescopic adjustment.

[0010] Furthermore, a plurality of foldable adhesive tapes are arranged in a ring-shaped array on the outer wall of the cylinder, and the end of the adhesive tape used for adhering to the patient's skin is butterfly-shaped.

[0011] By adhering the adhesive tape to the patient's skin, the entire device can be fixed without the need for a nurse to support it with their hands, which is more labor-saving. The end of the adhesive tape is set in a butterfly shape to increase the area of ​​adhesion to the patient's skin and improve the fixing effect. In addition, the adhesive tape has a protective film that can be torn off when in use.

[0012] Furthermore, an exhaust port communicating with the interior of the cylinder is provided on the outside of the cylinder, and a sealing cover for sealing the exhaust port is threadedly mounted on the exhaust port.

[0013] Furthermore, a piston is provided in the cylinder body and is slidably fitted with the inner wall thereof, and a push-pull rod handle is connected to the piston, and the push-pull rod handle extends to the outside of the cylinder body.

[0014] By pulling the push-pull rod handle to move the piston to the top of the exhaust port, the cylinder body and the exhaust port are connected, and then the sealing cover on the exhaust port is unscrewed. The patient's abdominal gas can be discharged through the needle, cylinder body and exhaust port in sequence. Therefore, there is no need to pull the piston and the push-pull rod handle out of the cylinder body to achieve exhaust. Exhaust from the side is convenient and safe, and reduces the risk of infection.

[0015] Furthermore, anti-slip grooves are provided on the outer surface of the adjusting cap.

[0016] The anti-slip pattern increases the friction between the adjusting cap and the hand to prevent slipping when the adjusting cap is screwed.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0018] 1. The utility model can drive the external thread and the limit block to slide and adjust along the slot by screwing the adjusting cap, under the action of the threaded connection between the external thread and the threaded hole, and can realize the telescopic adjustment of the puncture needle by screwing the adjusting cap forward and backward, and then can adjust the extension length of the puncture needle, so that it can be used by patients of different body shapes and avoid the occurrence of puncture of internal organs, and has high versatility.

[0019] 2. The utility model can fix the entire device by adhering the adhesive tape to the patient's skin, without the need for a nurse to support and fix it with hands, which is more labor-saving, and the end of the adhesive tape is arranged in a butterfly shape to increase the area of ​​adhesion to the patient's skin and improve the fixing effect.

[0020] 3. The utility model drives the piston to the top of the exhaust port by pulling the push-pull rod handle, so that the cylinder body is connected with the exhaust port, and then the sealing cover on the exhaust port is unscrewed. The patient's abdominal gas can be discharged through the puncture needle, the cylinder body and the exhaust port in sequence. Therefore, there is no need to pull the piston and the push-pull rod handle out of the cylinder body to achieve exhaust. Exhaust from the side is convenient and safe, and reduces the risk of infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the cylinder in the utility model;

[0023] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 4 It is a schematic diagram of the coordination of the notch and the limit block structure in the utility model.

[0025] In the figure: 1. cylinder; 11. piston; 12. push-pull rod handle; 2. connector; 21. limit ring; 22. notch; 3. adjustment cap; 31. threaded hole; 4. needle; 41. external thread; 42. limit block; 5. exhaust port; 51. sealing cover; 6. adhesive tape. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0027] See also Figure 1-Figure 4 The utility model provides a pneumoperitoneum exhaust needle, comprising a cylinder 1 and a puncture needle 4. The cylinder 1 is transparent for easy observation. The cylinder 1 has a connector 2 at its head, a limiting ring 21 is fixed inside the connector 2, and a through slot 22 is provided in the middle of the limiting ring 21. An adjusting cap 3 is rotatably mounted on the cylinder 1, and a threaded hole 31 that passes through inside and outside is provided in the middle of the adjusting cap 3. The puncture needle 4 passes through the threaded hole 31 and the slot 22 and extends to the outside. An external thread 41 is provided on the puncture needle 4, and the external thread 41 matches the thread of the threaded hole 31. A limiting block 42 is fixedly sleeved on the puncture needle 4, and the limiting block 42 is limited in the slot 22, and the outer wall of the limiting block 42 is tightly slidably fitted with the inner wall of the slot 22 to ensure sealing.

[0028] When using the device for exhaust, the puncture needle 4 is inserted into the patient's abdomen, and the gas in the patient's abdomen can be discharged by connecting the puncture needle 4 and the cylinder 1. At the same time, by screwing the adjusting cap 3, the external thread 41 and the limit block 42 can be driven to slide and adjust along the notch 22 under the threaded connection action of the external thread 41 and the threaded hole 31, and the telescopic adjustment of the puncture needle 4 can be achieved by screwing the adjusting cap 3 forward and backward, and then the extended length of the puncture needle 4 can be adjusted, so that it can be used by patients of different body shapes to avoid puncturing internal organs, and it has high versatility.

[0029] Specifically, the cross-section of the notch 22 is rectangular, and the cross-section of the limit block 42 is rectangular matching the notch 22. The notch 22 and the limit block 42 are arranged to be rectangular matching each other, which can play a guiding and limiting role for the needle 4, thereby preventing the needle 4 from rotating with the adjustment cap 3 and failing to achieve telescopic adjustment.

[0030] Specifically, a plurality of foldable adhesive tapes 6 are arranged in a ring-shaped array on the outer wall of the cylinder 1, and the end of the adhesive tape 6 for adhering to the patient's skin is in a butterfly shape. After the needle 4 is inserted into the patient's body, the entire device can be fixed by adhering the adhesive tape 6 to the patient's skin, without the need for the nurse to support and fix it with his hands, which is more labor-saving. The end of the adhesive tape 6 is arranged in a butterfly shape to increase the area of ​​adhesion to the patient's skin and improve the fixing effect. In addition, the adhesive tape 6 has a protective film, which can be torn off when in use.

[0031] Specifically, an exhaust port 5 communicating with the interior of the cylinder 1 is disposed on the outside of the cylinder 1 , and a sealing cover 51 for sealing the exhaust port 5 is threadedly mounted on the exhaust port 5 .

[0032] Specifically, a piston 11 is provided in the cylinder 1 and is slidably fitted with the inner wall thereof. A push-pull rod handle 12 is connected to the piston 11 and extends to the outside of the cylinder 1 .

[0033] It is worth mentioning that there are scale lines on the cylinder 1, the maximum is 20ml, and the exhaust port 5 is set at a position close to 15ml. After the puncture needle 4 is inserted into the patient's abdomen, the piston 11 is driven to a position greater than 15ml by pulling the push-pull rod handle 12. At this time, the inside of the cylinder 1 is connected to the exhaust port 5, and then the sealing cover 51 on the exhaust port 5 is unscrewed. The patient's abdominal gas can be discharged through the puncture needle 4, the cylinder 1 and the exhaust port 5 in turn. Therefore, there is no need to pull the piston 11 and the push-pull rod handle 12 out of the cylinder 1 to achieve exhaust. Exhaust from the side is convenient and safe, and reduces the risk of infection.

[0034] Specifically, the outer surface of the adjusting cap 3 is provided with anti-skid patterns to increase the friction between the adjusting cap 3 and the hand and prevent slipping when the adjusting cap 3 is screwed.

[0035] The specific working principle of the utility model is as follows.

[0036] First, according to the patient's body shape, the adjusting cap 3 is screwed to drive the needle 4 to extend and retract to an appropriate amount, and then the needle 4 is inserted into the patient's body. Then the protective film on the adhesive tape 6 is torn off and adhered to the patient's skin to achieve fixation. Then, the push-pull rod handle 12 is pulled to drive the piston 11 to move above the exhaust port 5, so that the cylinder 1 and the exhaust port 5 are connected, and then the sealing cover 51 on the exhaust port 5 is unscrewed, and the patient's abdominal gas can be discharged through the needle 4, the cylinder 1 and the exhaust port 5 to achieve abdominal exhaust.

[0037] The above is a detailed description of the utility model in combination with specific embodiments, and it cannot be determined that the specific implementation methods of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, making several equivalent substitutions or obvious modifications without departing from the concept of the present invention, and having the same performance or use, should be regarded as belonging to the patent protection scope of the utility model determined by the submitted claims.

Claims

1. A pneumoperitoneum exhaust needle, comprising a barrel (1) and a puncture needle (4), characterized in that: The head of the cylinder (1) is provided with a connector (2), a limiting ring (21) is fixed inside the connector (2), and a through notch (22) is provided in the middle of the limiting ring (21); An adjusting cap (3) is rotatably mounted on the cylinder (1), and a threaded hole (31) is provided in the middle of the adjusting cap (3) so as to penetrate inside and outside; The puncture needle (4) passes through the threaded hole (31) and the notch (22) and extends to the outside; The puncture needle (4) is provided with an external thread (41), the external thread (41) matches the thread of the threaded hole (31), a limiting block (42) is fixedly sleeved on the puncture needle (4), the limiting block (42) is limited in the slot (22), and the outer wall of the limiting block (42) is tightly slidably fitted with the inner wall of the slot (22).

2. A pneumoperitoneum exhaust needle according to claim 1, characterized in that: The cross-section of the notch (22) is rectangular, and the cross-section of the limit block (42) is rectangular matching the notch (22).

3. The pneumoperitoneum exhaust needle according to claim 1, characterized in that: A plurality of foldable adhesive tapes (6) are arranged in a ring-shaped array on the outer wall of the cylinder (1); the end of the adhesive tape (6) for adhering to the patient's skin is butterfly-shaped.

4. The pneumoperitoneum exhaust needle according to claim 1, characterized in that: An exhaust port (5) communicating with the interior of the cylinder (1) is provided on the outside of the cylinder (1), and a sealing cover (51) for sealing the exhaust port (5) is threadedly mounted on the exhaust port (5).

5. The pneumoperitoneum exhaust needle according to claim 1, characterized in that: The cylinder (1) is provided with a piston (11) which is slidably fitted with the inner wall thereof, and the piston (11) is connected to a push-pull rod handle (12), which extends to the outside of the cylinder (1).

6. The pneumoperitoneum exhaust needle according to claim 1, characterized in that: The outer surface of the adjusting cap (3) is provided with anti-slip grooves.

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