An integrated sternum infusion needle

Abstract

The present invention discloses an integrated sternum infusion needle, comprising a handle sleeve, an energy storage mechanism, a positioning assembly, a main needle assembly, a secondary needle assembly and a base. The handle sleeve is slidably matched with the base. The main needle assembly comprises a mounting seat and a main needle thereon. The mounting seat is slidably matched with the handle sleeve. The energy storage mechanism is located between the mounting seat and the handle sleeve. The positioning pin of the positioning assembly is extended in an initial state to position the mounting seat at a position where the energy storage mechanism is in an energy storage state. The trigger mechanism of the positioning assembly is arranged between the secondary needle assembly and the positioning pin. The trigger mechanism retracts the positioning pin when the secondary needle assembly moves to a preset position relative to the handle sleeve, and the secondary needle assembly can be slidably arranged. In summary, the puncture process of the above-mentioned integrated sternum infusion needle is completed by the elastic energy storage mechanism. The operator only needs to press down the handle sleeve to trigger the trigger mechanism to release the main needle assembly. The operation is convenient and the requirement for the operator's strength is greatly reduced, which saves effort and can cope with large-scale group injuries.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an integrated sternum infusion needle. Background Art

[0002] Intraosseous infusion is an advanced emergency measure. When intravenous puncture cannot be established, intraosseous puncture can quickly establish an intraosseous infusion channel and improve the rescue rate of emergency personnel at the emergency site. The sternal infusion needle on the market requires the operator to manipulate the handle to apply force to puncture the sternum. The puncture force must reach more than 100kg, which requires a high force from the operator, and is particularly difficult to use when dealing with large-scale mass injuries. Summary of the invention

[0003] In view of this, an object of the present invention is to provide an integrated sternum infusion needle to reduce the strength requirement for the operator and make it easier to operate.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The needle assembly is adapted to engage with the base of the plunger and to engage with the main needle assembly to engage with the main needle assembly.

[0006] Preferably, a safety mechanism is provided between the handle sleeve and the base, and the safety mechanism can lock the handle sleeve and the base relative to each other.

[0007] Preferably, the positioning assembly also includes a positioning plate, which is arranged in the handle sleeve and located at the periphery of the mounting seat, the positioning plate and one of the mounting seat are provided with the positioning pin, and the other of the positioning plate and the mounting seat are provided with a pin hole that cooperates with the positioning pin.

[0008] Preferably, the positioning pin includes a pin body and a reset member, the pin body is slidably arranged on the positioning plate, the reset member is arranged between the pin body and the positioning plate, the trigger mechanism includes a stop shaft arranged on the positioning plate and a retaining member for keeping the stop shaft in an initial position, the stop shaft cooperates with the pin body in the initial position to overcome the action of the reset member so that the head of the pin body extends out of the positioning plate and cooperates with the pin hole on the mounting seat, when the secondary needle assembly pushes the stop shaft to the release position, the tail end of the pin body enters the avoidance groove on the stop shaft under the action of the reset member to release the mounting seat.

[0009] Preferably, the retaining member is a spring or a consumable diaphragm.

[0010] Preferably, the secondary needle assembly comprises a first needle seat, a second needle seat and a secondary needle, the secondary needle passes through the first needle seat and is installed on the second needle seat, the first needle seat is slidably matched with the handle sleeve, and the second needle seat is slidably matched with the mounting seat.

[0011] Preferably, a first elastic member is provided between the second needle seat and the mounting seat.

[0012] Preferably, a second elastic member is provided between the handle sleeve and the base.

[0013] Preferably, a positioning arc surface is provided on the base, and the positioning arc surface fits with the sternal notch.

[0014] Preferably, the bottom surface of the base is provided with an attachment piece for fixing the base to the sternum skin.

[0015] To achieve the above-mentioned purpose, the present invention provides an integrated sternal infusion needle, comprising a handle sleeve, an energy storage mechanism, a positioning assembly, a main needle assembly, a secondary needle assembly and a base, wherein the handle sleeve is slidably matched with the base, a through hole is provided on the base for the needle head of the main needle assembly and the needle head of the secondary needle assembly to pass through, the main needle assembly comprises a mounting seat and a main needle mounted on the mounting seat, the mounting seat is slidably arranged in the handle sleeve, and an energy storage mechanism is arranged between the mounting seat and the handle sleeve, the positioning assembly comprises a positioning pin and a trigger mechanism, the positioning pin is extended in an initial state to position the mounting seat at a position where the energy storage mechanism is in an energy storage state, the trigger mechanism is arranged between the secondary needle assembly and the positioning pin, the trigger mechanism retracts the positioning pin to release the mounting seat when the secondary needle assembly moves to a preset position relative to the handle sleeve, and the secondary needle assembly is slidably matched with at least one of the handle sleeve, the base and the mounting seat;

[0016] When in use, place the base at the optimal puncture position of the patient's sternum, then press down the handle sleeve, the handle sleeve moves down together with the secondary needle assembly, until the secondary needle assembly and the patient's sternum enter the skin and reach the bone surface, continue to apply force downward, the secondary needle assembly moves up, the main needle assembly continues to move down with the handle sleeve to reach the bone surface, and at the same time, the secondary needle assembly moves up to trigger the trigger mechanism, so that the positioning pin retracts, and the mounting seat of the main needle assembly is released. The energy storage mechanism changes from the energy storage state to the release state, pushing the mounting seat of the main needle assembly and the main needle thereon to move downward and pierce the sternum. After the puncture is completed, the handle sleeve moves up with the secondary needle assembly and the main needle in the main needle assembly, leaving the base and the infusion hose in the main needle assembly, and the infusion process is carried out;

[0017] In summary, by setting an elastic energy storage mechanism on the integrated sternum infusion needle, the puncture process is completed by the elastic energy storage mechanism, and the operator only needs to press down to activate the trigger mechanism to release the main needle assembly. The operation is convenient and the requirement for the operator's strength in sternal puncture is greatly reduced, which saves effort and can cope with large-scale group injuries. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A cross-sectional view of an integrated sternum infusion needle provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of a positioning assembly in an integrated sternum infusion needle provided in an embodiment of the present invention;

[0021] Figure 3 A bottom view of the integrated sternum infusion needle provided in an embodiment of the present invention.

[0022] In the figure:

[0023] 101 is a base; 102 is an attachment; 103 is a safety mechanism; 104 is a handle sleeve; 105 is an auxiliary needle assembly; 106 is a second elastic member; 107 is a first elastic member; 108 is a trigger disk; 109 is a stop shaft; 110 is a positioning disk; 111 is a pin body; 112 is a reset member; 113 is a mounting seat; 114 is an energy storage mechanism; 115 is a main needle; 116 is an infusion hose; 117 is a positioning arc surface; 118 is a main needle through hole; 119 is a secondary needle through hole. DETAILED DESCRIPTION

[0024] The core of the present invention is to provide an integrated sternum infusion needle, the structural design of which can reduce the strength requirement for the operator and is more convenient to operate.

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1 , Figure 1 A cross-sectional view of an integrated sternum infusion needle provided in an embodiment of the present invention.

[0027] An integrated sternum infusion needle provided in an embodiment of the present invention includes a handle sleeve 104 , an energy storage mechanism 114 , a positioning assembly, a main needle assembly, a secondary needle assembly 105 and a base 101 .

[0028] The handle sleeve 104 is slidably matched with the base 101, and the base 101 is provided with puncture holes (main needle through hole 118, auxiliary needle through hole 119) for the needle of the main needle assembly and the needle of the auxiliary needle assembly 105 to pass through. Figure 3As shown, a fragile diaphragm can be provided at the puncture hole, which can be punctured by the main needle 115 and the auxiliary needle when firing, thereby isolating the main needle assembly and the auxiliary needle assembly 105 from the outside world. The above-mentioned destructible disposable structure can also ensure that the sternum infusion needle can only be used once. The main needle assembly includes a mounting seat 113, a main needle 115 mounted on the mounting seat 113, and an infusion hose 116 jacketed on the main needle 115. The main needle 115 is embedded in the mounting seat 113, and the infusion hose 116 jacketed on the main needle 115 can be detached from the mounting seat 113. The mounting seat 113 is slidably arranged in the handle sleeve 104, and an energy storage mechanism 114 is arranged between the mounting seat 113 and the handle sleeve 104. The energy storage mechanism 114 can be a compression spring, a tension spring, a shrapnel, a torsion spring, etc. The positioning assembly includes a positioning pin and a trigger mechanism. The pin can be set on one of the handle sleeve 104 and the mounting seat 113, and a pin hole or a matching surface that matches therewith can be set on the other of the handle sleeve 104 and the mounting seat 113. Of course, the positioning pin can also be set on an additional structure between the mounting seat 113 and the handle sleeve 104. The positioning pin extends out in the initial state to position the mounting seat 113 at a position where the energy storage mechanism 114 is in the energy storage state. The positioning pin can be maintained in the initial state by a spring and a destructible structure. The trigger mechanism is set between the secondary needle assembly 105 and the positioning pin. When the secondary needle assembly 105 moves to a preset position relative to the handle sleeve 104, the trigger mechanism retracts the positioning pin to release the mounting seat 113. The secondary needle assembly 105 slides with at least one of the handle sleeve 104, the base 101 and the mounting seat 113.

[0029] Compared with the prior art, the integrated sternum infusion needle provided by the present invention is used by placing the base 101 at the optimal puncture position of the patient's sternum, and then pressing down the handle sleeve 104, the handle sleeve 104 and the auxiliary needle assembly 105 move downward at the same time, until the auxiliary needle assembly 105 and the patient's sternum enter the skin and reach the bone surface, continue to apply force downward, the auxiliary needle assembly 105 moves upward, the main needle assembly continues to move downward with the handle sleeve 104 to reach the bone surface, and at the same time, the auxiliary needle assembly 105 moves upward to trigger the trigger mechanism, so that the positioning pin retracts, and the mounting seat 113 of the main needle assembly is released, and the energy storage mechanism 114 changes from the energy storage state to the release state, pushing the main needle assembly. The mounting base 113 of the assembly and the main needle 115 thereon move downward to pierce the sternum. After the puncture is completed, the handle sleeve 104 moves upward with the auxiliary needle assembly 105 and the main needle 115 of the main needle assembly, leaving the base 101 and the infusion hose 116 in the main needle assembly to carry out the infusion process; in summary, by arranging an elastic energy storage mechanism 114 in the integrated sternum infusion needle, the puncture process is completed by the elastic energy storage mechanism 114, and the operator only needs to press down to trigger the trigger mechanism to release the main needle assembly. The operation is convenient and the sternum puncture needle greatly reduces the operator's strength requirement, saves effort, and can cope with large-scale group injuries.

[0030] To avoid misoperation, a safety mechanism 103 is provided between the handle sleeve 104 and the base 101. The safety mechanism 103 can lock the handle sleeve 104 and the base 101 relative to each other. The above-mentioned safety mechanism 103 can be a spring pin or a threaded pin. In the storage and transportation state, the safety mechanism 103 fixes the handle sleeve 104 and the base 101 to each other. When puncture is required, the spring pin or the threaded pin is removed.

[0031] Of course, the above-mentioned safety mechanism 103 is only a preferred implementation scheme provided by the embodiment of the present invention, and is not actually limited to this. As long as it can ensure that the integrated sternum infusion needle will not be fired due to misoperation during storage and transportation, it will not be listed one by one here.

[0032] Preferably, in order to facilitate assembly, the positioning assembly further includes a positioning plate 110, which is disposed in the handle sleeve 104 and located outside the mounting seat 113. Figure 1 It can be seen that the handle sleeve 104 is snap-fitted with the positioning disk 110, and a positioning pin is provided on one of the positioning disk 110 and the mounting seat 113, and a pin hole cooperating with the positioning pin is provided on the other of the positioning disk 110 and the mounting seat 113. The positioning pin can be a spring pin, which can extend or retract into the positioning disk 110 or the mounting seat 113 under the action of an elastic member, or can extend into the positioning disk 110 or the mounting seat 113 under the action of a destructible structure. Under the action of a trigger mechanism, the positioning pin destroys the destructible structure, thereby retracting into the positioning disk 110 or the mounting seat 113.

[0033] Specifically, Figure 2 As shown, the positioning pin includes a pin body 111 and a reset member 112. The pin body 111 is slidably arranged on the positioning plate 110. The reset member 112 is arranged between the pin body 111 and the positioning plate 110. The trigger mechanism includes a stop shaft 109 arranged on the positioning plate 110 and a retaining member for keeping the stop shaft 109 in an initial position. When the stop shaft 109 is in the initial position, it cooperates with the pin body 111 to overcome the action of the reset member 112 so that the head of the pin body 111 extends out of the positioning plate 110 and cooperates with the pin hole on the mounting seat 113. When the secondary needle assembly 105 pushes the stop shaft 109 to the release position, the tail end of the pin body 111 enters the avoidance groove on the stop shaft 109 under the action of the reset member 112 to release the mounting seat 113.

[0034] Preferably, the retaining member for maintaining the blocking shaft 109 at the initial position is a spring or a consumable diaphragm.

[0035] like Figure 1As shown, the secondary needle assembly 105 includes a first needle seat, a second needle seat and a secondary needle. The secondary needle passes through the first needle seat and is installed on the second needle seat. The first needle seat slides with the handle sleeve 104, and the second needle seat slides with the mounting seat 113. After the secondary needle contacts the patient's skin, the secondary needle will slide relative to the first needle seat and lift the second needle seat.

[0036] To facilitate the cooperation between the secondary needle assembly 105 and the trigger mechanism, as Figure 1 As shown, a trigger disk 108 is connected to the second needle seat via a trigger rod. The trigger disk 108 moves with the movement of the second needle seat of the auxiliary needle assembly 105 . The auxiliary needle assembly 105 triggers the trigger mechanism via the trigger disk 108 .

[0037] In order to improve the hand feel during operation and increase feedback, in the embodiment of the present invention, a first elastic member 107 is provided between the second needle seat and the mounting seat 113 , and a second elastic member 106 is provided between the handle sleeve 104 and the base 101 .

[0038] Preferably, a positioning arc surface 117 is provided on the main body of the base 101, and the positioning arc surface 117 fits with the sternal notch. Figure 3 As shown, a main needle through hole 118 for the main needle 115 to pass through and a plurality of secondary needle through holes 119 arranged around the main needle through hole 118 for the secondary needles to pass through are provided at the center of the base 101 body. The main needle through hole 118 is located on the extension line of the perpendicular line of the tangent of the lowest point of the positioning arc surface 117, and the distance A between the lowest point of the positioning arc surface 117 and the center of the main needle through hole 118 is equal to the distance between the sternal notch and the thickest point of the sternum. When in use, the positioning arc surface 117 on the side of the base 101 body can be fitted with the sternal notch. At this time, utilizing the characteristic that the sternal notch and the thickest part of the sternum have a certain distance, the main needle through hole 118 will be exactly aligned with the thickest part of the sternum, so that the user can quickly and accurately find the puncture position, which is convenient for operation and saves time for treatment.

[0039] Furthermore, the bottom surface of the base 101 is provided with an attachment 102 for fixing the base 101 body to the sternum skin. The attachment 102 can be a double-sided adhesive tape or a suction cup, as long as it can be attached to the patient's skin to fix the base 101 body. The attachment 102 is removed from the base 101 before finding a suitable puncture position.

[0040] The main needle 115 is covered with an infusion hose 116 , and the main needle 115 and the infusion hose 116 are formed as one body.

[0041] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0042] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An integrated sternum infusion needle, characterized in that: The invention comprises a handle sleeve, an energy storage mechanism, a positioning assembly, a main needle assembly, a secondary needle assembly and a base, wherein the handle sleeve is slidably matched with the base, the base is provided with a through hole for the needle head of the main needle assembly and the needle head of the secondary needle assembly to pass through, the main needle assembly comprises a mounting seat and a main needle mounted on the mounting seat, the mounting seat is slidably arranged in the handle sleeve, and the energy storage mechanism is arranged between the mounting seat and the handle sleeve, the positioning assembly comprises a positioning pin and a trigger mechanism, the positioning pin is extended in an initial state to position the mounting seat at a position where the energy storage mechanism is in an energy storage state, the trigger mechanism is arranged between the secondary needle assembly and the positioning pin, and the trigger mechanism retracts the positioning pin to release the mounting seat when the secondary needle assembly moves to a preset position relative to the handle sleeve, and the secondary needle assembly is slidably matched with at least one of the handle sleeve, the base and the mounting seat; The positioning assembly further comprises a positioning plate, which is arranged in the handle sleeve and located at the periphery of the mounting seat, one of the positioning plate and the mounting seat is provided with the positioning pin, and the other of the positioning plate and the mounting seat is provided with a pin hole matched with the positioning pin; The positioning pin includes a pin body and a reset member, the pin body is slidably arranged on the positioning plate, the reset member is arranged between the pin body and the positioning plate, the trigger mechanism includes a stop shaft arranged on the positioning plate and a retaining member for keeping the stop shaft in an initial position, the stop shaft cooperates with the pin body in the initial position to overcome the action of the reset member so that the head of the pin body extends out of the positioning plate and cooperates with the pin hole on the mounting seat, when the secondary needle assembly pushes the stop shaft to the release position, the tail end of the pin body enters the avoidance groove on the stop shaft under the action of the reset member to release the mounting seat.

2. The integrated sternum infusion needle according to claim 1, characterized in that: A safety mechanism is provided between the handle sleeve and the base, and the safety mechanism can lock the handle sleeve and the base relative to each other.

3. The integrated sternum infusion needle according to claim 1, characterized in that: The retaining member is a spring or a fragile diaphragm.

4. The integrated sternum infusion needle according to claim 1, characterized in that: The secondary needle assembly comprises a first needle seat, a second needle seat and a secondary needle. The secondary needle passes through the first needle seat and is installed on the second needle seat. The first needle seat is slidably matched with the handle sleeve, and the second needle seat is slidably matched with the mounting seat.

5. The integrated sternum infusion needle according to claim 4, characterized in that: A first elastic member is arranged between the second needle seat and the mounting seat.

6. The integrated sternum infusion needle according to any one of claims 1 to 5, characterized in that: A second elastic member is arranged between the handle sleeve and the base.

7. The integrated sternum infusion needle according to any one of claims 1 to 5, characterized in that: The base is provided with a positioning arc surface, and the positioning arc surface is fitted with the sternal notch.

8. The integrated sternum infusion needle according to claim 7, characterized in that: The bottom surface of the base is provided with an attachment piece for fixing the base to the sternum skin.

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