CN109481790B - Intramuscular Syringes - Google Patents

Abstract

The invention discloses a medicine injector for muscle, which comprises a needle tube, a puncture needle, a connecting seat and two plungers; one end of the needle tube is provided with two mutually isolated sliding cavities, the other end of the needle tube is provided with a sealing plate, the sealing plate is provided with two through holes, and each through hole is communicated with one corresponding sliding cavity; each plunger is positioned in a corresponding sliding cavity and can slide in the sliding cavity in a sealing way; the shape of the radial section of the needle tube is 8-shaped; the connecting seat comprises an 8-shaped seat plate and an 8-shaped sliding pipe arranged at one end of the seat plate; two transfusion holes communicated with the puncture needle are arranged on the 8-shaped seat plate; the 8-shaped sliding pipe consists of two communicated arc-shaped sliding pipes, and each infusion hole is positioned in one corresponding arc-shaped sliding pipe; the closing plate of the needle tube is positioned in the 8-shaped sliding tube, the closing plate is abutted against the wall surface of the 8-shaped seat plate and is in sealing fit with the wall surface of the 8-shaped seat plate, and the needle tube can be twisted in the 8-shaped sliding tube in a reciprocating mode for a certain angle; and in the twisting process of the needle tube, each through hole and one corresponding infusion hole are communicated or blocked. The invention can inject more than two medicaments after being inserted into one time.

Description

Intramuscular Syringes

technical field

The invention belongs to the technical field of syringe structure design, and in particular relates to a syringe for intramuscular medicine.

Background technique

Generally speaking, patients need intramuscular injection of multiple drugs during comprehensive treatment, and nurses can generally mix multiple drugs and inject them into the muscle at one time; however, for some special drugs, they cannot be mixed and must be injected in different order; traditional In practice, multiple syringes are used for intramuscular injection sequentially, which causes each syringe to be inserted into the muscle at least once, thereby increasing the pain of the patient.

Contents of the invention

The object of the present invention is to provide an intramuscular drug injector capable of injecting at least two kinds of medicaments only once, so as to effectively alleviate the suffering of patients.

The technical solution for realizing the purpose of the present invention is: a syringe for intramuscular medicine, comprising a needle tube, a puncture needle, a connecting seat and two plungers; one end of the needle tube is provided with two sliding chambers isolated from each other, and the other end of the needle tube is provided with The sealing plate is provided with two through holes, and each through hole communicates with a corresponding sliding cavity; each plunger is located in a corresponding sliding cavity and can seal and slide in the sliding cavity; the shape of the radial section of the needle tube is 8-shaped; the connecting seat includes a 8-shaped seat plate and an 8-shaped slide tube arranged at one end of the seat plate; there are two infusion holes connected to the needle on the 8-shaped seat plate; the 8-shaped slide tube is composed of two connected arc-shaped slide tubes Each infusion hole is located in a corresponding arc-shaped sliding tube; the sealing plate of the needle tube is located in the figure-eight sliding tube, the sealing plate abuts against the wall of the figure-eight seat plate and the two are sealed, and the needle tube can be placed in the figure-eight sliding tube Reciprocating twisting at a certain angle; during the twisting process of the needle tube, each through-hole and a corresponding infusion hole are connected or blocked.

A further preferred solution is: the other end of the 8-shaped seat plate is provided with a needle mount; the needle includes a needle head and a needle seat; the needle mount is provided with a liquid channel, and the two infusion holes communicate with the needle head of the needle through the liquid channel.

A further preferred solution is: the needle seat is clamped and sleeved on the needle mounting seat of the seat plate.

A further preferred solution is: the outer wall of the needle tube is provided with two limiting bosses protruding outward along the radial direction of the needle tube, and the inner wall of each arc-shaped slide tube is provided with a concave limiting slideway and a The guide slideway is connected with the position slideway; each limit boss is adapted to a corresponding limit slideway and is interference-fitted with a corresponding guide slideway.

A further preferred solution is: during the twisting process of the needle tube, the movement trajectory of each through hole is an arc.

A further preferred solution is: the infusion hole and a corresponding through hole are arranged at both ends of the moving track line of the through hole.

A further preferred solution is: the position of each through hole deviates from the center position of a corresponding sliding cavity.

A further preferred solution is: the distance between the centers of the two through holes is smaller than the distance between the centers of the two sliding cavities.

The present invention has the advantage that at least two kinds of medicaments can be injected once pierced, which can effectively alleviate the pain of patients.

Description of drawings

Fig. 1 is a kind of three-dimensional structure schematic diagram of the present invention;

Fig. 2 is a kind of exploded schematic diagram of syringe shown in Fig. 1;

Fig. 3 is a schematic diagram of a three-dimensional structure of the connecting seat in the syringe shown in Fig. 1;

Fig. 4 is a schematic cross-sectional structural view of the connecting seat shown in Fig. 3;

Fig. 5 is a schematic cross-sectional structure diagram of a needle tube in the syringe shown in Fig. 1;

Fig. 6 is a schematic structural view of the syringe shown in Fig. 1 when it is in a twisted position;

Fig. 7 is a schematic structural view of the syringe shown in Fig. 1 in another twisted position.

Reference numerals are: needle tube 1, sliding cavity 11, sealing plate 12, through hole 13, needle 2, needle head 21, needle head seat 22, connecting seat 3, figure-eight seat plate 31, infusion hole 311, figure-eight slide tube 32, Arc-shaped slide tube 321 , limit slideway 322 , guide slideway 323 , lancet mount 33 , liquid channel 331 , plunger 4 , limit boss 5 .

Detailed ways

(Example 1)

This embodiment is a syringe for intramuscular medicine, as shown in FIGS.

One end of the needle tube is provided with two sliding chambers 11 that are side by side and isolated from each other, and the other end of the needle tube is provided with a sealing plate 12 for blocking the same end opening of the two sliding chambers. The sealing plate is provided with two through holes 13, each The through hole communicates with a corresponding sliding cavity.

Each plunger is located in a corresponding sliding chamber and can seal and slide in the sliding chamber; each plunger sucks medicinal liquid into the sliding chamber by pulling outward, and discharges medicinal liquid when pushed inward.

The shape of each sliding chamber is preferably circular, so that the shape of the radial section of the needle tube in this embodiment is a figure-eight shape.

The position of each through hole is preferably deviated from the center position of a corresponding sliding cavity, that is, an eccentric hole; a further preferred mode is that the center distance between two eccentric holes is smaller than the center distance between two sliding cavities.

The connecting seat includes a figure-eight seat plate 31, a figure-eight sliding pipe 32 arranged at one end of the seat plate, and a needle mounting seat 33 arranged at the other end of the seat plate.

The needle 2 includes a needle head 21 and a needle head seat 22, and the needle head seat is clamped and sleeved on the needle mounting seat of the seat plate.

Two infusion holes 311 are arranged on the 8-shaped seat plate, and a liquid passage 331 is provided on the lancet mounting base, and the two infusion holes communicate with the needle head of the lancet through the liquid passage.

The 8-shaped sliding tube is composed of two connected arc-shaped sliding tubes 321, and each infusion hole is located in a corresponding arc-shaped sliding tube; one end of the needle tube provided with a sealing plate is plugged into the 8-shaped sliding tube.

The sealing plate of the needle tube is located in the 8-shaped sliding tube, and the sealing plate abuts against the wall surface of the 8-shaped seat plate and the two seals cooperate, and the needle tube can be twisted back and forth at a certain angle in the 8-shaped sliding tube.

In this embodiment, the outer wall of the needle tube is provided with two position-limiting bosses 5 protruding outward along the radial direction of the needle tube, and the inner wall of each arc-shaped slide tube 321 is provided with a concave position-limiting slideway 322 and a The guide slideway 323 connected to the limit slideway; each limit boss is adapted to a corresponding limit slideway and is interference fit with a corresponding guide slideway;

When the needle tube is inserted into the 8-shaped sliding tube, each limiting boss is first inserted into a corresponding guide slide, and then enters into a corresponding limiting slide. At this time, under the limiting action of the limiting slide on the limiting boss , the needle tube can be twisted back and forth in the 8-shaped sliding tube.

During the twisting process of the needle tube, each through hole can be connected or blocked with a corresponding infusion hole.

During the twisting process of the needle tube, the movement trajectory of each through hole is an arc, so the infusion hole can be arranged on a corresponding arc, and its position can meet the above functions.

In this embodiment, the infusion hole and the corresponding through hole are arranged at both ends of the moving trajectory of the through hole, and the length of the trajectory is preset to ensure that the displacement of the through hole and the corresponding infusion hole can meet the above functions.

As shown in Figure 6, the upper through hole and the upper infusion hole are in a connected state at this time, and at this time the lower through hole and the lower infusion hole are in a completely deviated or blocked state, and the two cannot form a fluid channel.

When the needle tube in Fig. 6 is twisted in the direction shown by the arrow in Fig. 6 to the state shown in Fig. 7, the upper through hole and the upper infusion hole are completely deviated, that is, blocked, and the two cannot form a liquid channel. The lower through hole is in communication with the lower infusion hole, forming a liquid channel.

In Fig. 6 and Fig. 7, in order to eliminate the through hole and the infusion hole respectively, the through hole is shown with a dotted line, and the infusion hole is shown with a solid line.

When this embodiment is in use, hold the connecting seat and twist the needle tube in one direction until it cannot be twisted, then pull the corresponding plunger to draw the medicinal liquid into the corresponding sliding cavity; After liquid, twist the needle tube in the opposite direction until it cannot be twisted, then pull the other plunger to draw the liquid medicine into the other sliding cavity; Decide which fluid to inject first.

Claims (4)

1. An intramuscular administration syringe comprises a needle tube and a puncture needle; the method is characterized in that:

the device also comprises a connecting seat and two plungers; one end of the needle tube is provided with two mutually isolated sliding cavities, the other end of the needle tube is provided with a sealing plate, the sealing plate is provided with two through holes, and each through hole is communicated with one corresponding sliding cavity; each plunger is positioned in a corresponding sliding cavity and can slide in the sliding cavity in a sealing way; the shape of the radial section of the needle tube is 8-shaped; the connecting seat comprises an 8-shaped seat plate and an 8-shaped sliding pipe arranged at one end of the seat plate; two transfusion holes communicated with the puncture needle are arranged on the 8-shaped seat plate; the other end of the 8-shaped seat plate is provided with a felting needle mounting seat; the puncture needle comprises a needle head and a needle head seat; the puncture needle mounting seat is provided with a liquid channel, and the two infusion holes are communicated with the needle head of the puncture needle through the liquid channel; the 8-shaped sliding pipe consists of two communicated arc-shaped sliding pipes, and each infusion hole is positioned in one corresponding arc-shaped sliding pipe; the closing plate of the needle tube is positioned in the 8-shaped sliding tube, the closing plate is abutted against the wall surface of the 8-shaped seat plate and is in sealing fit with the wall surface of the 8-shaped seat plate, and the needle tube can be twisted in the 8-shaped sliding tube in a reciprocating mode for a certain angle; in the twisting process of the needle tube, each through hole and a corresponding infusion hole are communicated or blocked;

two limiting bosses protruding outwards along the radial direction of the needle tube are arranged on the outer wall of the needle tube, and an inwards-concave limiting slide way and a guide slide way communicated with the limiting slide way are arranged on the inner wall of each arc-shaped slide tube; each limiting boss is matched with a corresponding limiting slide way and is in interference fit with a corresponding guiding slide way; in the twisting process of the needle tube, the moving track line of each through hole is an arc line, and the infusion hole and the corresponding through hole are arranged at two ends of the moving track line of the through hole;

in the twisting process of the needle tube, each limiting boss slides from one end, which is abutted against a corresponding limiting slide way, to the other end, which is abutted against the limiting slide way.

2. A syringe for muscle medication according to claim 1, wherein: the needle head seat is clamped and sleeved on the needle mounting seat of the seat plate.

3. A syringe for muscle medication according to claim 1, wherein: the position of each through hole is deviated from the central position of a corresponding one of the slide cavities.

4. A muscle syringe as set forth in claim 3, wherein: the center distance of the two through holes is smaller than that of the two slide cavities.