Integrated tension pneumothorax puncture pressure reducer
By designing an integrated tension pneumothoracic pressure reducing device, the water sealing effect is used to prevent external gas from entering the chest cavity, and the problem of external gas entering the chest cavity in the existing technology is solved, achieving a safe and effective pneumothoracic pressure reduction effect.
Patent Information
- Application Number
- CN202421432892.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-06-21
AI Technical Summary
After puncture, existing tension pneumothoracic pressure reducing devices will form a channel that connects internally and externally to the chest cavity, causing external gas to enter the chest cavity and cause infection.
An integrated tension pneumothoracic pressure reducing device is designed, with a puncture needle core and piston set inside the outer shell. Normal saline is extracted before puncture to form a water sealing effect. After puncture, only the outer shell and puncture needle cannula are left to prevent external gas from entering.
Effectively prevent external gas from entering the chest cavity, ensure that high-pressure gas is discharged in the chest cavity until the internal and external air pressure is balanced, and reduce the risk of infection.
Smart Images
Figure CN222942737U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of medical devices, and in particular relates to an integrated tension pneumothorax puncture pressure reducer. Background Art
[0002] Tension pneumothorax is an emergency pneumothorax. It is caused by the formation of valves at the site of trachea, bronchus or lung damage. Gas enters the pleural cavity with each inhalation and accumulates, causing the pleural cavity pressure to be higher than the atmospheric pressure, compressing the lungs and shifting the mediastinum to the healthy side, affecting normal breathing and blood circulation. When a tension pneumothorax occurs, if you are not in a hospital environment, the first aid measures that can be taken are to drain the gas as quickly as possible to reduce the pressure in the pleural cavity; in an emergency, puncture and suction can be performed first, which can increase the survival rate of patients with tension pneumothorax; in critical situations, use a thick needle to puncture the pleural cavity at the second intercostal space on the affected side at the midclavicular line to allow the high-pressure gas to be ejected to achieve the effect of exhaust and decompression.
[0003] At present, the pressure reducers used for emergency puncture of tension pneumothorax in the field are usually made by temporary assembly. The puncture device is used to form a passage between the inside and outside of the chest cavity to discharge the high air pressure in the chest cavity. However, this passage forms an interconnected channel between the chest cavity and the outside world. The gas in the chest cavity can be discharged, but the gas from the outside world can also enter the chest cavity. Such two-way communication will result in a slower drop in the air pressure in the chest cavity, and the outside gas entering the chest cavity may carry bacteria and cause infection in the chest cavity. Utility Model Content
[0004] The utility model provides an integrated tension pneumothorax puncture pressure reducer, wherein a puncture needle sleeve is arranged at the head end of an outer shell of the puncture pressure reducer; a piston and a core rod are detachably arranged inside, and a puncture needle core is arranged at the lower end of the piston; the puncture needle core passes through the puncture needle sleeve; before puncturing, only 1 cm of physiological saline needs to be drawn from the outer shell; then the puncture needle core is punctured into the chest cavity together with the puncture needle sleeve; after the puncture is completed, the core rod, the piston and the puncture needle core are pulled out together; only the outer shell and the puncture needle sleeve are left; since there is saline in the outer shell, a water seal is formed, and the high-pressure gas accumulated in the chest cavity can be discharged, but the external gas cannot enter the chest cavity under the water seal until the air pressure inside and outside the chest cavity is balanced; the utility model solves the problem that the current pneumothorax puncture pressure reducer will form a communication between the inside and outside of the chest cavity after puncturing into the chest cavity, and there may be a problem that the gas carrying contaminated bacteria from the outside enters the chest cavity.
[0005] In order to achieve the above technical purpose, the utility model is realized by the following technical scheme: an integrated tension pneumothorax puncture pressure reducer, comprising: an outer shell, a puncture needle core, a puncture needle cannula, and a push assembly;
[0006] A puncture needle core is arranged inside the outer shell, and the tip of the puncture needle core protrudes out of the outer shell from the center of the head end of the outer shell; the tail end of the puncture needle core is located inside the outer shell;
[0007] A detachable and movable push assembly is disposed in the outer shell; the tail end of the puncture needle core is disposed on the push assembly;
[0008] A puncture needle sleeve is centrally arranged on the head end surface of the outer shell; the puncture needle sleeve is communicated with the interior of the outer shell; and the puncture needle core passes through the puncture needle sleeve.
[0009] Preferably, one end of the connector is centrally disposed on the head end surface of the outer shell;
[0010] The other end of the connector is provided with a puncture needle cannula;
[0011] The puncture needle cannula is in communication with the connector and the outer shell;
[0012] The puncture needle core passes through the puncture needle sleeve, and the tip end of the puncture needle core extends out of the puncture needle sleeve.
[0013] Preferably, a detachable needle cap is provided on the connector;
[0014] The needle cap is used to cover the puncture needle core and the puncture needle cannula.
[0015] Preferably, the inner diameter of the puncture needle sleeve is larger than the outer diameter of the puncture needle core.
[0016] Preferably, a curved contraction structure with gradually decreasing inner and outer diameters is formed at the head end of the puncture needle cannula.
[0017] Preferably, a waterproof and breathable membrane is provided inside the outer shell and below the pushing assembly;
[0018] The outer edge of the waterproof and breathable membrane is arranged on the inner wall of the outer shell;
[0019] A small hole is arranged at the center of the waterproof breathable membrane, and the puncture needle core passes through the waterproof breathable membrane through the small hole.
[0020] Preferably, an elastic film sealing sleeve is provided below the waterproof breathable membrane and on the edge of the small hole;
[0021] The upper opening edge of the elastic membrane sealing sleeve is butted against the edge of the small hole;
[0022] The lower end of the elastic film sealing sleeve is attached to the surface of the puncture needle core, but has no connection with the surface of the puncture needle core.
[0023] Preferably, the pushing assembly comprises a core rod and a piston;
[0024] One end of the core rod penetrates into the outer shell from the rear end of the outer shell, and the other end of the core rod is located outside the outer shell;
[0025] A piston is centrally arranged at one end of the core rod located in the outer shell.
[0026] Preferably, a push handle is provided on one end of the core rod located outside the outer shell;
[0027] A fixing buckle is detachably arranged between the push handle and the rear end of the outer shell.
[0028] The setting of the fixing buckle makes it impossible for the core rod and the piston to drive the puncture needle core to move.
[0029] Preferably, the fixing buckle is configured as a hollow columnar structure, and a notch is vertically opened on the side wall of the hollow columnar structure.
[0030] The beneficial effects of the utility model are:
[0031] The utility model provides an integrated tension pneumothorax puncture pressure reducer, wherein a puncture needle sleeve is arranged at the head end of an outer shell; a piston and a core rod are detachably arranged in the outer shell, and a puncture needle core is arranged below the piston; the puncture needle core passes through the puncture needle sleeve; before puncture, 1 cm of normal saline can be extracted in the outer shell by using the piston; the puncture needle core carries the puncture needle sleeve to puncture into the chest cavity, and then the outer shell is pulled out together with the core rod, the piston and the puncture needle core; the gas accumulated in the chest cavity is discharged through the puncture needle sleeve, and because normal saline is extracted in the outer shell, a water seal effect is formed; in this way, only the gas accumulated in the chest cavity can be discharged, and the external gas will not enter the chest cavity under the effect of the water seal; until the air pressure inside and outside the chest cavity is balanced.
[0032] The inner diameter of the puncture needle cannula is larger than the outer diameter of the puncture needle core, and a curved gathering structure with gradually decreasing inner and outer diameters is formed at the tail end of the puncture needle cannula; the design of the curved gathering structure at the tail end of the puncture needle cannula helps the puncture needle cannula to puncture into the body more smoothly under the guidance of the puncture needle core.
[0033] A waterproof and breathable membrane is provided inside the outer shell to prevent the physiological saline in the outer shell from spilling out of the outer shell during transportation.
[0034] An elastic film sealing sleeve is arranged on the edge of the small hole on the lower surface of the waterproof breathable membrane for the puncture needle core to pass through; the lower end of the elastic film sealing sleeve is attached to the surface of the puncture needle core, but has no connection with the surface of the puncture needle core. In this way, the elastic film sealing sleeve does not affect the normal movement of the puncture needle core on the one hand; on the other hand, after the puncture needle core is pulled out, the elastic film sealing sleeve will automatically shrink under the action of elasticity, and physiological saline will be prevented from leaking from this place as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0036] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0037] Figure 2 This is a schematic diagram of the structure of the utility model after the needle cap is removed;
[0038] Figure 3 It is a schematic diagram of the arc-folding structure at the tail end of the puncture needle cannula of the utility model;
[0039] Figure 4 It is a schematic diagram of the structure of the elastic membrane sealing sleeve arranged between the small hole on the waterproof breathable membrane and the puncture needle core of the utility model;
[0040] Figure 5 This is a schematic diagram of the fixing buckle structure of the utility model;
[0041] Figure 6 It is a schematic diagram of the needle cap structure of the utility model;
[0042] In the accompanying drawings, the structural names represented by the reference numerals are:
[0043] 1-outer shell, 101-connector, 2-core rod, 201-push handle, 3-piston, 4-puncture needle core, 5-puncture needle sleeve, 6-waterproof breathable membrane, 601-elastic membrane sealing sleeve, 7-needle cap, 8-fixing buckle. DETAILED DESCRIPTION
[0044] 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 of 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.
[0045] Example 1
[0046] An integrated tension pneumothorax puncture pressure reducer comprises: an outer shell 1, a puncture needle core 4, a puncture needle sleeve 5, and a pushing assembly;
[0047] like Figure 1As shown, the outer shell 1 in this embodiment is configured as a cylindrical structure; a through hole is opened at the center of the head end surface of the outer shell 1, and a connector 101 is arranged on the through hole, and the connector 101 is a cylindrical structure with two ends open; the upper end edge of the connector 101 is connected to the edge of the through hole at the center of the head end of the outer shell 1; the connector 101 is connected to the inside of the outer shell 1.
[0048] The rear end surface of the outer shell 1 is an open structure; a puncture needle core 4 is arranged in the outer shell 1, and the chest cavity is punctured by the puncture needle core 4; the rear end of the puncture needle core 4 is located in the outer shell 1, and the head end of the puncture needle core 4 passes through the through hole at the center of the head end of the outer shell 1 and extends out of a part of the head end of the outer shell 1; there is no connection between the entire puncture needle core 4 and the outer shell 1; the puncture needle core 4 can move relative to the outer shell 1.
[0049] The movement of the puncture needle core 4 relative to the outer shell 1 refers to pushing out or retracting the puncture needle core 4 from the through hole at the center of the head end of the outer shell 1; the purpose of this is to adjust and control the length of the puncture needle core 4 extending out of the outer shell 1 according to the depth of puncture. The component used to control the extension and retraction of the puncture needle core 4 is a push assembly; the push assembly is located in the outer shell 1 and connected to the puncture needle core 4, and the puncture needle core 4 is controlled under the action of the push assembly.
[0050] like Figure 1 As shown, the above-mentioned pushing assembly includes: a piston 3, a core rod 2 and a pushing handle 201;
[0051] The head end of the core rod 2 is located in the outer shell 1, and the tail end of the core rod 2 is located outside the outer shell 1; and a part of the core rod 2 near the tail end of the outer shell 1 extends out of the tail end open structure of the outer shell 1; a piston 3 is arranged on the head end of the core rod 2 located in the outer shell 1; the piston 3 can be made of rubber material; the outer side wall of the entire piston 3 fits the inner wall of the outer shell 1; the piston 3 can move freely in the outer shell 1; the tail end of the puncture needle core 4 located in the outer shell 1 is centrally connected to the piston 3; in this way, the core rod 2 drives the piston 3 to move in the outer shell 1, thereby driving the movement of the puncture needle core 4, and controlling the length of the tip of the puncture needle core 4, that is, the head end of the puncture needle core 4 extending out of the outer shell 1; the outer shell 1 can also be pulled out together with the core rod 2, the piston 3 and the puncture needle core 4.
[0052] As a preferred embodiment, in order to enable better force application when the entire outer shell 1 is pushed by hand for puncture, a push handle 201 is provided on the tail end of the core rod 2; the push handle 201 is configured to be a flat round cake shape; when puncture is performed or the puncture needle core 4 needs to be pushed, the hand is placed on the push handle 201 to facilitate the force application operation.
[0053] like Figure 2As shown, the present embodiment further provides a puncture needle cannula 5; the puncture needle cannula 5 is sleeved on the outside of the puncture needle core 4; both ends of the puncture needle cannula 5 are set to an open structure, and the tail end opening of the puncture needle cannula 5 is connected to the connector 101; and the tail end opening of the puncture needle cannula 5 is directly opposite to the opening of the connector 101; the puncture needle cannula 5 can be connected with the connector 101 and the outer shell 1. The inner diameter of the puncture needle cannula 5 is larger than the outer diameter of the puncture needle core 4, and there is no contact between the inner wall of the puncture needle cannula 5 and the outer wall of the puncture needle core 4, and there is a certain gap between the two.
[0054] Before puncture, push the piston 3 as far as possible to the lower position; then extend the puncture needle core 4 and the puncture needle cannula 5 below the level of the physiological saline solution, pull the piston 3 backwards, and first extract about 1 cm of physiological saline solution in the outer shell 1; because there is a gap between the puncture needle core 4 and the puncture needle cannula 5, the physiological saline solution will enter the outer shell 1 from the above gap under the action of negative pressure. After the physiological saline solution is extracted, the puncture is officially started; hold the outer shell 1, keep the puncture needle core 4 and the puncture needle cannula 5 in place; then use the puncture needle core 4 to carry the puncture needle cannula 5 to puncture into the chest cavity; after the puncture is in place, pull it out of the outer shell 1 together with the core rod 2, the piston 3 and the puncture needle core 4; only the puncture needle cannula 5 and the outer shell 1 are left; at this time, there is physiological saline in the outer shell 1, forming a water seal; in this way, only the high-pressure gas accumulated in the chest cavity can be discharged, and the external gas will not enter the chest cavity under the action of the water seal; until the air pressure inside and outside the chest cavity is balanced.
[0055] like Figure 1 As shown, when the entire puncture pressure reducer is not in use, in order to protect the puncture needle core 4 and prevent the puncture needle core 4 from causing accidental injury to people; a needle cap 7 is designed to protect the puncture needle core 4; the needle cap 7 is designed to be a cone, and the upper end of the cone can be directly sleeved on the outer wall of the connector 101; so that the puncture needle core 4 is located inside the needle cap 7.
[0056] Example 2
[0057] Based on Example 1, after the pressure reducer provided in Example 1 is punctured into the chest cavity, physiological saline exists in the outer shell 1 to form a water seal; however, during the patient transfer, if the outer shell 1 is not held stably, the physiological saline in the outer shell 1 may spill out.
[0058] like Figure 2As shown, in order to prevent the physiological saline in the outer shell 1 from spilling out, a waterproof breathable membrane 6 is arranged inside the outer shell 1. The waterproof breathable membrane 6 can be made of expanded polytetrafluoroethylene (E-PTFE) waterproof breathable membrane, which can only pass gas but not liquid. The outer edge of the waterproof breathable membrane 6 is connected to the inner wall of the outer shell 1, and the entire waterproof breathable membrane 6 is arranged below the piston 3. The puncture needle core 4 passes through the small hole opened at the center of the waterproof breathable membrane 6. In this way, the waterproof breathable membrane 6 will not affect the position adjustment of the puncture needle core 4.
[0059] Example 3
[0060] Based on Example 2, in Example 2, the puncture needle core 4 passes through the small hole at the center of the waterproof breathable membrane 6 to achieve the purpose of non-interference between the two; however, there will be a certain gap between the puncture needle core 4 and the small hole at the center of the waterproof breathable membrane 6; due to the existence of this gap, there may still be a situation where effusion or blood in the chest cavity flows out from the small hole at the center of the waterproof breathable membrane 6.
[0061] like Figure 4 As shown, in this embodiment, an elastic film sealing sleeve 601 is arranged below the waterproof breathable membrane 6; the elastic film sealing sleeve 601 is made of a material with high elasticity such as a silicone film; the upper opening edge of the elastic film sealing sleeve 601 is connected to the edge of the small hole at the center below the waterproof breathable membrane 6; the lower end of the elastic sealing membrane 601 is naturally attached to the outer wall of the puncture needle core 4; since there is no fixed connection between the elastic sealing membrane 601 and the puncture needle core 4, the existence of the elastic sealing membrane 601 will not affect the movement of the puncture needle core 4. In addition, after the puncture needle core 4 is pulled out, the elastic sealing membrane 601 will automatically shrink to minimize the flow of physiological saline from the small hole.
[0062] Example 4
[0063] Based on Example 1, in Example 1, the puncture needle sleeve 5 is sleeved on the outside of the puncture needle core 4; after the puncture needle core 4 punctures the chest cavity, as the puncture needle core 4 goes deeper, when the puncture reaches the position of the puncture needle sleeve 5, as the puncture needle core 4 continues to go deeper, the puncture needle sleeve 5 will also follow the puncture needle core 4 into the chest cavity.
[0064] Due to the positional structural relationship between the puncture needle cannula 5 and the puncture needle core 4 and the difference in inner and outer diameters; when the puncture needle core 4 punctures and reaches the position of the puncture needle cannula 5, the puncture needle core 4 needs to carry the puncture needle cannula 5 to continue to go deeper. However, when the puncture needle cannula 5 first follows and enters the chest cavity, there may be a certain resistance due to the difference in inner and outer diameters between the two.
[0065] like Figure 3As shown, in this embodiment, a curved retracted structure with gradually decreasing inner and outer diameters is formed at the head end opening of the puncture needle sleeve 5. This curved retracted structure is retracted toward the puncture needle core 4. There is still a certain gap between the smallest inner and outer diameters of this retracted structure and the outer wall of the puncture needle core 4.
[0066] Since an inwardly contracted arc structure is provided at the rear end of the puncture needle cannula 5, when the puncture needle core 4 punctures the puncture needle cannula 5, the contracted arc structure can reduce the resistance of the puncture needle cannula 5 following the puncture needle core 4 into the chest cavity, making it easier for the puncture needle cannula 5 to follow and enter the chest cavity.
[0067] Example 5
[0068] Based on the embodiment of embodiment 1, in embodiment 1, after 1 cm of normal saline is extracted from the outer shell; when performing thoracic puncture, the outer shell 1 and the internal puncture needle core 4 need to keep the position of the puncture needle core 4 fixed, and the puncture needle core 4 cannot move significantly, because this will affect whether the puncture is successful and will affect the control of the puncture depth.
[0069] like Figure 2 As shown, a fixing buckle 8 is detachably arranged between the push handle 201 and the tail end of the outer shell 1. After the physiological saline is extracted, the core rod 2 moves back a part, and there is a gap between the push handle 201 at the tail end of the core rod 2 and the tail end of the outer shell 1; the fixing buckle 8 is clamped on the core rod 2 at this gap.
[0070] The setting of the fixing buckle 8 makes the core rod 2 and the piston 3 no longer able to drive the puncture needle core 4 to move. That is, the puncture needle core 4 can be kept from shifting during the puncture process, and the position of the puncture needle core 4 can be kept fixed.
[0071] The structure of the fixing buckle 8 is set as a hollow columnar structure, and a notch is vertically opened on the side wall of the hollow columnar structure; when the fixing buckle 8 is installed, the rod-shaped structures set at both ends of the fixing buckle 8 are respectively against the bottom of the push handle 201 and the tail end of the outer shell 1. In this way, the fixing buckle 8 prevents the core rod 2 from moving into the outer shell 1, and the puncture needle core 4 is also immovable.
[0072] Example 6
[0073] In this embodiment, a marking line is arranged on the side wall of the outer shell 1, and the marking line is actually a scale line of the solution height; during the process of extracting liquid, it is convenient to know whether the height of the extracted liquid meets at least 1 cm.
[0074] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0075] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An integrated tension pneumothorax puncture pressure reducer, characterized in that: include: Outer shell, puncture needle core, puncture needle sleeve, pushing assembly; A puncture needle core is arranged in the outer shell, and the tip of the head end of the puncture needle core protrudes from the center of the head end of the outer shell; the tail end of the puncture needle core is located in the outer shell; A detachable and movable push assembly is disposed in the outer shell; the tail end of the puncture needle core is disposed on the push assembly; A puncture needle sleeve is centrally arranged on the head end surface of the outer shell; the puncture needle sleeve is communicated with the interior of the outer shell; and the puncture needle core passes through the puncture needle sleeve.
2. The integrated tension pneumothorax puncture pressure reducer according to claim 1, characterized in that: One end of the connector is centrally disposed on the head end surface of the outer shell; The other end of the connector is provided with a puncture needle cannula; The puncture needle cannula is in communication with the connector and the outer shell; The puncture needle core passes through the puncture needle sleeve, and the tip end of the puncture needle core extends out of the puncture needle sleeve.
3. The integrated tension pneumothorax puncture pressure reducer according to claim 2, characterized in that: A detachable needle cap is provided on the connector; The needle cap is used to cover the puncture needle core and the puncture needle cannula.
4. The integrated tension pneumothorax puncture pressure reducer according to claim 1, characterized in that: The inner diameter of the puncture needle sleeve is greater than the outer diameter of the puncture needle core.
5. The integrated tension pneumothorax puncture pressure reducer according to claim 1, characterized in that: The head end of the puncture needle sleeve forms an arc-shaped contraction structure with gradually decreasing inner and outer diameters.
6. The integrated tension pneumothorax puncture pressure reducer according to claim 1, characterized in that: A waterproof and breathable membrane is arranged inside the outer shell and below the pushing assembly; The outer edge of the waterproof and breathable membrane is arranged on the inner wall of the outer shell; A small hole is arranged at the center of the waterproof breathable membrane, and the puncture needle core passes through the waterproof breathable membrane through the small hole.
7. The integrated tension pneumothorax puncture pressure reducer according to claim 6, characterized in that: An elastic film sealing sleeve is provided below the waterproof and breathable membrane and on the edge of the small hole; The upper opening edge of the elastic membrane sealing sleeve is butted against the edge of the small hole; The lower end of the elastic film sealing sleeve is attached to the surface of the puncture needle core, but has no connection with the surface of the puncture needle core.
8. The integrated tension pneumothorax puncture pressure reducer according to claim 1, characterized in that: The pushing assembly includes a core rod and a piston; One end of the core rod penetrates into the outer shell from the rear end of the outer shell, and the other end of the core rod is located outside the outer shell; A piston is centrally arranged at one end of the core rod located in the outer shell.
9. The integrated tension pneumothorax puncture pressure reducer according to claim 8, characterized in that: A push handle is provided on one end of the core rod located outside the outer shell; A fixing buckle is detachably arranged between the push handle and the rear end of the outer shell.
10. The integrated tension pneumothorax puncture pressure reducer according to claim 9, characterized in that: The fixing buckle is configured as a hollow columnar structure, and a notch is vertically opened on the side wall of the hollow columnar structure.