Novel telescopic fixed trocar

Abstract

The utility model provides a novel telescopic fixed trocar. The novel telescopic fixed trocar comprises a puncture needle tube, a puncture needle core capable of being arranged in the puncture needle tube in a penetrating mode, a clamp and an air bag. The puncture needle tube is formed by sequentially connecting a puncture tube head, a puncture telescopic tube and a puncture hard tube, the air bag is arranged on the outer wall of the puncture hard tube, an air tube is arranged in the puncture needle tube and is formed by sequentially connecting a first pipeline, a telescopic pipeline and a second pipeline, and the first pipeline is fixed to the inner wall of the puncture tube head and partially extends out of the puncture tube head; the telescopic pipeline is correspondingly located on the inner wall of the puncture telescopic tube, the second pipeline is fixed to the inner wall of the puncture hard tube and communicated with the air bag, and the clamp can clamp the outer wall of the puncture needle tube. The clamp on the puncture needle tube is matched with the air bag of the puncture needle tube, the depth of the puncture needle tube inserted into the abdominal cavity can be kept fixed, the puncture telescopic tube of the puncture needle tube can be suitable for the abdominal wall thickness of different patients, and the puncture needle has the advantages of being convenient to use and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a novel telescopic fixed trocar. Background Art

[0002] A trocar is a medical device used for puncture sampling or injection. It is used for puncture operations, including obtaining biological tissue or body fluid samples from the body surface or inside organs for disease diagnosis and treatment. It is mainly composed of a puncture needle tube and a puncture needle core. The trocar has a wide range of uses and can be used in many fields such as clinical medicine and pathology.

[0003] When the puncture needle of the existing puncture device is inserted into the patient's abdominal cavity, it is usually clamped in the abdominal wall opening to keep the depth of its penetration into the abdominal cavity fixed, but the way the puncture needle is clamped in the abdominal wall opening has the disadvantages of easy sliding and easy dislocation. In addition, when the patient's abdominal wall is thick, the puncture needle of the existing puncture device is not long enough to fully enter the abdominal cavity; when the patient's abdominal wall is thin, the length of the puncture needle of the puncture device entering the abdominal cavity is too long, which is easy to interfere with the organs in the abdominal cavity, resulting in unsafe conditions. Utility Model Content

[0004] The utility model aims to provide a novel retractable fixed trocar to solve the problem that the puncture needle tube of the existing trocar proposed in the above background technology is usually clamped in the abdominal wall opening to keep the depth of its penetration into the abdominal cavity fixed when puncturing into the patient's abdominal cavity, but the way in which the puncture needle tube is clamped in the abdominal wall opening has the disadvantages of being easy to slide and easy to fall out; and when the patient's abdominal wall is thick, the puncture needle tube of the existing trocar is not long enough to completely enter the abdominal cavity; when the patient's abdominal wall is thin, the length of the puncture needle tube of the trocar entering the abdominal cavity is too long, which is easy to interfere with the organs in the abdominal cavity, resulting in insufficient safety.

[0005] The technical solution adopted by the utility model to solve the technical problem is as follows: a new type of retractable fixed trocar, including a puncture needle tube, a puncture needle core that can be inserted into the puncture needle tube, a clip and an airbag; the puncture needle tube is composed of a puncture tube head, a puncture telescopic tube and a puncture hard tube connected in sequence, the airbag is arranged on the outer wall of the puncture hard tube, a trachea is arranged inside the puncture needle tube, and the trachea is composed of a first pipe, a telescopic pipe and a second pipe connected in sequence, the first pipe is fixed to the inner wall of the puncture tube head and partially extends outside the puncture tube head, the telescopic pipe is correspondingly located on the inner wall of the puncture telescopic pipe, the second pipe is fixed to the inner wall of the puncture hard tube and is connected to the airbag, and the clip can be clamped on the outer wall of the puncture needle tube.

[0006] In some embodiments, a first clamping ring is provided on the inner wall of the puncture tube head, and the first pipe is clamped in the first clamping ring; a second clamping ring is provided on the inner wall of the puncture hard tube, and the second pipe is clamped in the second clamping ring.

[0007] In some embodiments, the first pipe is configured as a hard pipe, and a portion of the first pipe extending outside the puncture tube head is connected to a valve.

[0008] In some embodiments, a spring rope is connected to the outer wall of the valve, and the spring rope is connected to a clip.

[0009] In some embodiments, the puncture needle core includes a cap and a needle core, and the cap is integrally connected to the needle core.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the utility model, the depth of the puncture needle tube inserted into the abdominal cavity can be kept fixed by the combination of the clip on the puncture needle tube and the air bag of the puncture needle tube, and the puncture telescopic tube of the puncture needle tube can be adapted to the abdominal wall thickness of different patients, which has the advantages of convenience and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the new retractable fixed trocar;

[0013] Figure 2 It is a schematic diagram of the split structure of the new retractable fixed trocar;

[0014] Figure 3 It is a schematic diagram of the perspective structure of the puncture needle tube of the new telescopic fixed trocar;

[0015] Figure 4 It is a schematic diagram of the enlarged structure of the A part of the new retractable fixed trocar;

[0016] Figure 5 It is a schematic diagram of the enlarged structure of the B part of the new retractable fixed trocar;

[0017] Figure 6 It is a schematic diagram of the trachea structure of the new retractable fixed trocar;

[0018] Figure 7 This is a schematic diagram of the first use state of the novel retractable fixed trocar inserted into the abdominal cavity;

[0019] Figure 8 This is a schematic diagram of the second usage state of the new retractable fixation trocar inserted into the abdominal cavity.

[0020] Description of reference numerals:

[0021] 100. New retractable fixed trocar; 10. Puncture needle tube; 101. Puncture tube head; 1011. First clamp ring; 102. Puncture telescopic tube; 103. Puncture hard tube; 1031. Second clamp ring; 20. Puncture needle core; 201. Cover cap; 202. Needle core; 30. Clip; 301. Spring rope; 40. Airbag; 50. Trachea; 501. First pipeline; 5011. Valve; 502. Telescopic pipeline; 503. Second pipeline; 200. Abdominal wall. DETAILED DESCRIPTION

[0022] The technical solutions 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 only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0024] Please also read Figures 1 to 8 As shown, Figure 1 This is a schematic diagram of the overall structure of the new retractable fixed trocar. Figure 2 This is a schematic diagram of the split structure of the new retractable fixed trocar. Figure 3 This is a schematic diagram of the perspective structure of the puncture needle tube of the new telescopic fixed trocar. Figure 4 This is an enlarged structural diagram of the new retractable fixed trocar at point A. Figure 5 This is an enlarged structural diagram of the new retractable fixed trocar at point B. Figure 6 This is a schematic diagram of the trachea structure of the new retractable fixed trocar. Figure 7 This is a schematic diagram of the first use state of the new retractable fixed trocar inserted into the abdominal cavity. Figure 8 This is a schematic diagram of the second usage state of the new retractable fixation trocar inserted into the abdominal cavity.

[0025] The utility model provides the following technical solutions: a novel retractable fixed trocar 100, comprising a puncture needle tube 10, a puncture needle core 20 which can be inserted into the puncture needle tube 10, a clamp 30 and an air bag 40; the puncture needle tube 10 is composed of a puncture tube head 101, a puncture telescopic tube 102 and a puncture hard tube 103 which are connected in sequence, the air bag 40 is arranged on the outer wall of the puncture hard tube 103, a trachea 50 is arranged inside the puncture needle tube 10, and the trachea 50 is composed of a first pipe 501, a telescopic pipe 502 and a second pipe 503 which are connected in sequence, the first pipe 501 is fixed on the inner wall of the puncture tube head 101 and partially extends outside the puncture tube head 101, the telescopic pipe 502 is correspondingly located on the inner wall of the puncture telescopic tube 102, the second pipe 503 is fixed on the inner wall of the puncture hard tube 103 and is connected with the air bag 40, and the clamp 30 can be clamped on the outer wall of the puncture needle tube 10.

[0026] In the novel retractable fixed trocar 100 provided in this embodiment, when performing the puncture operation, the puncture needle core 20 is first inserted into the interior of the puncture needle tube 10, and then the bottom end of the puncture needle tube 10 is aligned with the patient's abdominal wall 200. Then the user pushes the top end of the puncture needle core 20 to move the bottom needle head of the puncture needle core 20 to the outside of the bottom end of the puncture needle tube 10 to make a hole in the patient's abdominal wall 200. After the hole is made, the user continues to push the puncture needle core 20. The puncture needle core 20 is inserted until the outer wall of the puncture needle core 20 abuts against the inner wall of the puncture tube 103, so that the puncture needle core 20 transmits the hand push force to the puncture tube 103, so that the puncture tube 103 can be forced to pass through the opening of the abdominal wall 200 into the abdominal cavity, and then the user opens the trachea 50 to inflate the air bag 40 on the outer wall of the puncture tube 103, so that the air bag 40 bulges and abuts against the inner wall of the abdomen. When the thickness of the patient's abdominal wall 200 is small, please refer to Figure 7 As shown, the upper end of the puncture tube 103 is not completely covered by the thickness of the abdominal wall 200, so that the upper end of the puncture tube 103 will be exposed on the outside of the abdominal wall 200. At this time, the user can clamp the upper end of the puncture tube 103 exposed on the outside of the abdominal wall 200 with the clamp 30, and the clamp 30 is simultaneously in contact with the outer abdominal wall, so that the upper end of the puncture tube 103 is located on the outside of the abdominal wall 200 and is in contact with the outer abdominal wall through the clamp 30, so that the air bag 40 at the lower end of the puncture tube 103 is inflated and in contact with the inner abdominal wall, so that the puncture tube 103 can be inserted into the abdominal cavity and fixed on the abdominal wall 200, thereby achieving the fixing of the depth of the puncture needle tube 10 inserted into the abdominal cavity. When the thickness of the patient's abdominal wall 200 is relatively large, please refer to Figure 8As shown, the puncture rigid tube 103 passes through the opening of the abdominal wall 200 and enters the abdominal cavity. The user opens the trachea 50 and inflates the air bag 40 on the outer wall of the puncture rigid tube 103 to make the air bag 40 bulge and abut against the inner wall of the abdomen. Since the patient's abdominal wall 200 is relatively thick, the upper end portion of the puncture rigid tube 103 is completely covered by the thickness of the abdominal wall 200, and a portion of the puncture telescopic tube 102 is driven by the puncture rigid tube 103 to be located in the opening of the abdominal wall 200 to continue to adapt to the thickness of the abdominal wall 200. At this time, the user pulls out the puncture needle core 20 from the puncture needle tube 10, and then the user pulls the puncture needle tube 10 to make the puncture telescopic tube 102 of the puncture needle tube 10 in a fully stretched state. Then the user can clamp the clip 30 on the puncture telescopic tube 102 in the stretched state on the outside of the abdominal wall 200. The clip 30 can be clamped at the node of the puncture telescopic tube 102 The notch is located at the notch, and the clip 30 abuts against the outer abdominal wall at the same time. Then, the user cancels pulling the puncture needle tube 10, so that the portion of the puncture telescopic tube 102 located outside the abdominal wall 200 retracts, and the portion of the puncture telescopic tube 102 located in the opening of the abdominal wall 200 is fixed by the combination of the clip 30 abutting against the outer abdominal wall and the air bag 40 abutting against the inner abdominal wall to maintain the stretched state to adapt to the thickness of the abdominal wall 200, and the puncture hard tube 102 is located in the opening of the abdominal wall 200 and in the abdominal cavity and is fixed by the combination of the clip 30 abutting against the outer abdominal wall and the air bag 40 abutting against the inner abdominal wall, so that the portion of the puncture telescopic tube 102 located outside the abdominal wall 200 abuts against the outer abdominal wall through the clip 30, and the lower end portion of the puncture hard tube 103 is located in the abdominal cavity and abuts against the inner abdominal wall through the air bag 40, so that the depth of the puncture needle tube 10 inserted into the abdominal cavity can be fixed. When the user needs to pull out the puncture needle tube 10 from the abdominal wall, the user removes the clip 30, the air bag 40 is deflated, and the puncture needle tube 10 can be directly pulled out. The first pipe 501 of the trachea 50 is fixed to the inner wall of the puncture tube head 101 and partially extends outside the puncture tube head 101, the telescopic pipe 502 of the trachea 50 is correspondingly located on the inner wall of the puncture telescopic pipe 102, and the second pipe 503 of the trachea 50 is fixed to the inner wall of the puncture hard tube 103 and is connected with the air bag 40, so that when the puncture telescopic pipe 102 is stretched or retracted, the telescopic pipe 502 between the first pipe 501 and the second pipe 503 can synchronously adapt to the stretching or contraction of the puncture telescopic pipe 102, so that the second pipe 503 of the trachea 50 is always connected with the air bag 40, and the first pipe 501 part extending outside the puncture tube head 101 is used to connect the gas source, so that the trachea 50 can be ventilated and transported to the air bag 40. In the utility model, the clip 30 on the puncture needle tube 10 and the air bag 40 on the puncture needle tube 10 can be matched to keep the depth of the puncture needle tube 10 inserted into the abdominal cavity fixed, and the puncture telescopic tube 102 of the puncture needle tube 10 can be adapted to the thickness of the abdominal wall 200 of different patients, which has the advantages of convenience and practicality.

[0027] It is worth mentioning that please refer to Figure 2As shown, the width of the tube wall at the needle end of the puncture needle core 20 is smaller than the tube wall at the outlet end of the bottom of the puncture hard tube 103 and smaller than the tube wall above the puncture hard tube 103 at the outlet end, and the width of the tube wall above the needle end of the puncture needle core 20 is smaller than the tube wall above the puncture hard tube 103 at the outlet end and larger than the tube wall at the outlet end of the bottom of the puncture hard tube 103. When the user passes the puncture needle core 20 through the puncture needle tube 10 so that the needle end is exposed outside the outlet end at the bottom of the puncture needle tube 10, the outer wall of the puncture needle core 20 above the needle end abuts against the inner wall of the outlet end at the bottom of the puncture hard tube 103, so that the puncture needle tube 10 limits the insertion distance of the puncture needle core 20, and when the puncture needle core 20 is pushed by the user, the puncture needle core 20 can transmit the hand push to the puncture hard tube 103, so that the puncture hard tube 103 can be inserted into the abdominal cavity under force.

[0028] In some embodiments, the inner wall of the puncture tube head 101 is provided with a first clamping ring 1011 , in which the first pipe 501 is clamped; the inner wall of the puncture tube 103 is provided with a second clamping ring 1031 , in which the second pipe 503 is clamped.

[0029] In specific implementation, the inner wall of the puncture tube head 101 clamps and fixes the first pipe 501 through the first clamp ring 1011, and the inner wall of the puncture hard tube 103 clamps and fixes the second pipe 503 through the second clamp ring 1031, so that the pipes at both ends of the telescopic pipe 502 are fixed, and the telescopic pipe 502 can be located between the first pipe 501 and the second pipe 503 to follow and adapt to the stretching or retraction of the puncture telescopic pipe 102. Through such a setting, the trachea 50 can be fixed in the puncture needle tube 10, and the telescopic pipe 502 of the trachea 50 can follow and adapt to the stretching or retraction of the puncture telescopic pipe 102, so that the second pipe 503 of the trachea 50 is always connected with the airbag 40.

[0030] In some embodiments, the first pipe 501 is configured as a hard pipe, and the portion of the first pipe 501 extending outside the puncture tube head 101 is connected to a valve 5011 .

[0031] In specific implementation, the valve 5011 on the first pipeline 501 is used to connect the gas source and allow the user to control the switch of the gas pipe 50 to deliver the gas source to the airbag 40. Through such a setting, the user can control the gas pipe 50 to deliver the gas source to the airbag 40 through the valve 5011, so that the airbag 40 is filled with gas.

[0032] In some embodiments, the outer wall of the valve 5011 is connected to a spring rope 301 , and the spring rope 301 is connected to a clip 30 .

[0033] In specific implementation, the outer wall of the valve 5011 is connected to the clip 30 through the spring rope 301, so that the clip 30 is not easily lost, and the clip 30 can be pulled and used at will through the spring rope 301, so that the user can clamp the clip 30 at different positions on the puncture needle tube 10. Through such a setting, the spring rope 301 connects the clip 30, so that the clip 30 is not easily lost.

[0034] In some embodiments, the puncture needle core 20 includes a cap 201 and a needle core 202 , and the cap 201 is integrally connected to the needle core 202 .

[0035] In specific implementation, when the puncture needle core 20 is inserted into the puncture needle tube 10, the cap 201 is used for the user to hold the top of the puncture needle tube 10, and the needle head of the needle core 202 is used to pass through the puncture needle tube 10 and be located outside the bottom of the puncture needle tube 10. With such a configuration, the puncture needle core 20 can be effectively operated by the user for puncture.

[0036] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel retractable fixed trocar, characterized in that: It includes a puncture needle tube, a puncture needle core that can be inserted into the puncture needle tube, a clip and an airbag; the puncture needle tube is composed of a puncture tube head, a puncture telescopic tube and a puncture hard tube connected in sequence, the airbag is arranged on the outer wall of the puncture hard tube, a trachea is arranged inside the puncture needle tube, and the trachea is composed of a first pipe, a telescopic pipe and a second pipe connected in sequence, the first pipe is fixed to the inner wall of the puncture tube head and partially extends outside the puncture tube head, the telescopic pipe is correspondingly located on the inner wall of the puncture telescopic pipe, the second pipe is fixed to the inner wall of the puncture hard tube and is connected to the airbag, and the clip can be clamped on the outer wall of the puncture needle tube.

2. The novel telescopic fixed trocar according to claim 1 is characterized in that: The inner wall of the puncture tube head is provided with a first clamping ring, in which the first pipe is clamped; the inner wall of the puncture hard tube is provided with a second clamping ring, in which the second pipe is clamped.

3. The novel telescopic fixed trocar according to claim 1 is characterized in that: The first pipeline is configured as a hard pipe, and a portion of the first pipeline extending outside the puncture tube head is connected to a valve.

4. The novel telescopic fixed trocar according to claim 3 is characterized in that: The outer wall of the valve is connected with a spring rope, and the spring rope is connected with a clip.

5. The novel telescopic fixed trocar according to claim 1 is characterized in that: The puncture needle core comprises a cover cap and a needle core, and the cover cap is integrally connected with the needle core.

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