CN220110260U - Powder propulsion device - Google Patents

Abstract

The utility model provides a powder propelling device; the medical instrument comprises a medicine storage cylinder, a piston, a push rod and a cap, wherein one end of the push rod is in butt joint with the piston, the piston is arranged in an inner cavity of the medicine storage cylinder in a sliding manner, a plurality of petals are upwards distributed on an outlet end ring of the piston, and a first gap is reserved between every two adjacent petals; the cap cover is established outside the exit end of storing up the cartridge case, is equipped with sealing rib on the cavity inner wall that the block held local storing up the cartridge case, sealing rib and the ascending first clearance one-to-one of exit end, sealing rib embedding first clearance and shutoff first clearance to the problem that the storing up cartridge case tip of current powder advancing device appears leaking easily in the warehousing and transportation process, sets up sealing rib on storing up cartridge case tip complex block, shutoff storing up the clearance between the cartridge case tip lamella, avoids the leakage of powder in the warehousing and transportation process.

Description

Powder propulsion device

Technical Field

The utility model relates to the field of medical instruments, in particular to a powder propelling device.

Background

Hemostasis is an important component of wound first aid, rapid and effective hemostasis is an important link of pre-hospital first aid and hospital operation treatment, can improve survival rate of wounded, and is an important guarantee of life safety. The common hemostatic agent has various dosage forms such as powder, granule, sponge, gauze and the like, and can control bleeding through various ways such as physics, chemistry, physiology and the like. The hemostatic agent is applied to surface tissue wounds, can rapidly play a role in hemostasis, but has the characteristics of small external wounds, deeper wounds and the like for the wounds of penetrating wounds and blind pipe wounds, and generally, the hemostatic product is difficult to rapidly send to bleeding points and cannot play a role in hemostasis in time. Especially for critical patients, if the patients cannot be timely cured, the life safety is seriously threatened.

Chinese patent (publication No. CN 114053563A) discloses a solid medicament propelling device, wherein a cylindrical barrel is used for storing medicaments, a push rod is used for pushing a piston to rapidly push medicaments out to achieve the aim of wound hemostasis during hemostasis, and the front end of the medicament storing barrel is provided with a plurality of elastic flap structures; although the resistance of pushing is reduced to a certain extent, the pushing is beneficial to pushing by one hand, and the leakage of powdery medicament in the medicament storage process is easy to cause.

Disclosure of Invention

The utility model aims at overcoming the defects in the prior art, and provides a powder propelling device, wherein sealing ribs and sealing grooves are arranged on caps matched with the end parts of a storage cylinder to seal gaps between flaps at the end parts of the storage cylinder, and the gap positions are isolated through the sealing grooves matched with sealing rings, so that the leakage of hemostatic agent in the storage and transportation process is avoided.

In order to achieve the above purpose, the following technical scheme is adopted:

the powder propelling device comprises a medicine storage cylinder, a piston, a push rod and a cap, wherein one end of the push rod is in butt joint with the piston, the piston is arranged in an inner cavity of the medicine storage cylinder in a sliding manner, a plurality of flaps are upwards distributed on an outlet end ring of the piston, and a first gap is reserved between every two adjacent flaps; the cap cover is established outside the exit end of storing up the cartridge case, is equipped with sealing rib on the lid holds the cavity inner wall of local storing up the cartridge case, sealing rib and the first clearance one-to-one that the exit end was up, sealing rib embedding first clearance and shutoff first clearance.

Further, the outlet end of the medicine storage cylinder is conical, and the flaps and the first gaps are alternately distributed along the outlet end of the medicine storage cylinder upwards.

Further, the cavity of the cap is a conical cavity, a sealing rib is arranged on a bus surface of the conical cavity, and the outlet end of the cartridge storage case can be inserted into the conical cavity of the cap.

Further, the sealing ring is embedded on the outer circumferential surface of the medicine storage cylinder, the sealing groove corresponding to the sealing ring is arranged on the inner wall of the conical cavity of the cover cap, and the outer ring of the sealing ring can be clamped into the sealing groove.

Furthermore, one end of the piston connected with the push rod is an annular part, the other end of the piston connected with the push rod is a plugging head, and an inner ring of the annular part is embedded with the end part of the push rod.

Further, the annular part is divided into a plurality of sheet structures along the annular direction, a second gap is reserved between every two adjacent sheet structures, and the sheet structures can be compressed inwards under the action of radially inward external force.

Further, along the axial direction, the diameter of the annular part gradually reduces, so that the outer ring of the annular part forms a conical surface, the plugging head is butted with the small-diameter end of the annular part, and the annular part is butted with the plugging head to form a piston with a groove.

Further, the sheet structure is equipped with reverse buckle towards one side of piston axis, and reverse buckle is located the recess, and the push rod tip is equipped with the forward buckle of cooperation reverse buckle.

Further, the pole core of push rod is cross, and the one end of pole core is equipped with the cooperation end, and the cooperation end includes a plurality of lamella bodies of following annular interval arrangement, forms the third clearance between the adjacent lamella body, forms lamella body, the structure that third clearance distributes in turn.

Further, one side of the petal body far away from the axis of the push rod is provided with a forward buckle.

Compared with the prior art, the utility model has the advantages and positive effects that:

(1) The sealing ribs are arranged on the caps matched with the end parts of the medicine storage cylinders to seal gaps among flaps of the end parts of the medicine storage cylinders, so that the leakage of powder in the storage and transportation process is avoided.

(2) Through the cooperation between seal groove and the storage cartridge case outer wall sealing ring on the block, keep apart the cooperation position of lamella and sealing rib through seal groove combination sealing ring, realize storing the secondary seal of cartridge case.

(3) Be equipped with lamella body structure on the push rod, can make the push rod block in the piston recess in the propulsion, increase and push away medicine stability, the buckle on the plug cooperatees with the buckle on the push rod simultaneously, guarantees the stable connection of push rod and piston to optimize the powder in the storage cartridge case and release stability.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

Fig. 1 is a schematic view of a powder pushing device in an embodiment of the utility model.

Fig. 2 is a schematic diagram of the components of a powder pushing device in an embodiment of the utility model.

Fig. 3 is an internal schematic view of the cap according to an embodiment of the present utility model.

Fig. 4 is an enlarged schematic view of the box-selected area in fig. 3.

Fig. 5 is a schematic view of a cap according to an embodiment of the utility model.

Fig. 6 is an internal schematic view of a piston in an embodiment of the utility model.

Fig. 7 is a schematic structural view of a piston according to an embodiment of the present utility model.

Fig. 8 is a schematic view of a push rod according to an embodiment of the present utility model.

Fig. 9 is a schematic view of the box-selected area in fig. 8.

Fig. 10 is a schematic structural diagram of a push rod according to an embodiment of the present utility model.

In the figure, 1-cartridge, 2-piston, 3-push rod, 4-cap, 101-flap, 102-seal ring, 103-first gap, 104-pull handle, 201-groove, 202-reverse buckle, 203-sheet structure, 204-second gap, 205-stopper, 301-forward buckle, 302-flap, 303-third gap, 304-push handle, 305-stem core, 401-seal bar, 402-seal groove.

Detailed Description

In an exemplary embodiment of the present utility model, a powder pushing device is provided as shown in fig. 1-10.

At present, the front end of the solid-state medicament propelling device adopts an elastic flap structure, when medicament is pushed out from the medicament storage cylinder, the flap can deform to increase the area of an output port, so that propelling pressure is reduced, single-hand propelling is facilitated, but after the elastic flap structure is adopted, powdery medicament can leak from gaps among the flaps, the medicament quantity in the medicament storage cylinder is changed, the quality effect is influenced, and the medicament is wasted.

Based on this, this embodiment proposes a powder propulsion device, sets up sealing rib 404 on the end matched of storage cartridge 1's lid 3, and sealing rib 404 fills the clearance between the lamella 101 in the warehousing and transportation process to shutoff storage cartridge 1's end lamella 101's clearance avoids the leakage of powder in the warehousing and transportation process, keeps the medicine volume in the storage cartridge 1, reduces extravagant.

The powder pushing device will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, the powder propelling device comprises a medicine storage cylinder 1, a piston 2, a push rod 3 and a cap 4, wherein one end of the push rod 3 is in butt joint with the piston 2, the piston 2 is arranged in an inner cavity of the medicine storage cylinder 1 in a sliding manner, the piston 2 extrudes pre-filled powder in the medicine storage cylinder 1 by sliding along the inner cavity of the medicine storage cylinder 1, and the cap 4 is sleeved outside an outlet end of the medicine storage cylinder 1 to block the outlet end of the medicine storage cylinder 1.

The outlet end of the medicine storage cylinder 1 is conical, as shown in fig. 2, a plurality of flaps 101 are distributed upwards on the outlet end ring, first gaps 103 are reserved between adjacent flaps 101, and the flaps 101 and the first gaps 103 are alternately distributed along the outlet end ring of the medicine storage cylinder 1; when the powder in the medicine storage cylinder 1 is output, the piston 2 slides along the inner cavity of the medicine storage cylinder 1 to push the powder out from one end of the flap 101 of the medicine storage cylinder 1, and the flap 101 expands to increase the opening area of the output end, so that the output speed of the powder is ensured.

The end of the storage cartridge 1, which is far away from the outlet end, is provided with a pull assisting handle 104, the pull assisting handle 104 is distributed outwards along the radial direction of the storage cartridge 1, a sealing ring 102 is embedded on the outer circumferential surface of the storage cartridge 1 between the pull assisting handle 104 and the output end, and the sealing ring 102 is arranged close to the input end. As shown in fig. 2, the outer profile of the assist handle 104 is oval.

The cap 4 is provided with a cavity for accommodating the local medicine storage tube 1, the cavity of the cap 4 is a conical cavity, the bus surface of the conical cavity is provided with sealing ribs 404, as shown in fig. 3, the sealing ribs 404 are in one-to-one correspondence with the first gaps 103 on the end ring of the outlet, and after the outlet end of the medicine storage tube 1 is inserted into the conical cavity of the cap 4, the sealing ribs 404 are embedded into the first gaps 103 to seal the first gaps 103.

In order to clamp the cap 4 and the conical cavity, the relative positions of the cap 4 and the conical cavity are kept in the storage and transportation process, a sealing groove 402 is formed in the inner wall of the conical cavity of the cap 4, as shown in fig. 4, the distribution position of the sealing groove 402 corresponds to that of a sealing rib 404, after the outlet end of the cartridge 1 is matched with the cap 4 and the sealing rib 404 is embedded into a first gap 103, the outer ring of the sealing ring 102 is clamped into the sealing groove 402, the relative positions of the cap 4 and the cartridge 1 are fixed, the sealing rib 404 is kept to fill and seal the first gap 103, the matched positions of the flap 101 and the sealing rib 404 are isolated through the sealing groove 402 in combination with the sealing ring 102 through the matched positions of the sealing groove 402 on the cap 4 and the outer wall of the cartridge 1, and secondary sealing of the cartridge 1 is realized.

As shown in fig. 2, six flaps 101 and six first gaps 103 are arranged on the outlet end of the cartridge 1, and six sealing ribs 404 are arranged on the corresponding cap 4, and as shown in fig. 5, the six sealing ribs 404 are in one-to-one correspondence with the six first gaps 103.

One end of the piston 2 connected with the push rod 3 is an annular part, the other end of the piston is a sealing head 205, the inner ring of the annular part is embedded with the end part of the push rod 3, the annular part is divided into a plurality of sheet structures 203 along the annular direction, and a second gap 204 is reserved between every two adjacent sheet structures 203, as shown in fig. 7. The sheet-like structure 203 is capable of being compressed inward by radially inward external force, and gradually reduces in diameter of the annular portion in the axial direction, so that the outer ring of the annular portion forms a tapered surface, as shown in fig. 6.

When the piston 2 moves along the inside of the medicine storage cylinder 1, the piston 2 can stay at any position of the inner wall of the medicine storage cylinder 1 under the tension action of the sheet-shaped structure 203, so that the position of the piston 2 in the storage and transportation process is kept, and the leakage of internal powder caused by false touch is reduced.

The annular part is in butt joint with the plugging head 205 to form the piston 2 with the groove 201, the outer diameter of the plugging head 205 is the same as the inner diameter of the medicine storage cylinder 1, and the outer circumferential surface of the plugging head 205 is attached to the inner wall of the medicine storage cylinder 1, so that the functions of plugging the medicine storage cylinder 1 and sealing powder are achieved.

The side of the sheet structure 203 facing the axis of the piston 2 is the inner side of the sheet structure 203, the inner side of the sheet structure 203 is provided with a reverse buckle 202, the end part of the push rod 3 is provided with a forward buckle 301 matched with the reverse buckle 202, as shown in fig. 8, when the push rod 3 is connected with the piston 2, the reverse buckle 202 is clamped with the forward buckle 301, and the piston 2 is matched and fixed with the push rod 3.

As shown in fig. 9 and 10, a rod core 305 of the push rod 3 is in a cross shape, one end of the rod core 305 is provided with a matching end, the other end is provided with a boosting handle 304, the matching end comprises a plurality of petals 302 which are arranged at intervals along the circumferential direction, a third gap 303 is formed between every two adjacent petals 302, and a structure in which the petals 302 and the third gaps 303 are alternately distributed is formed.

The petal body 302 can elastically deform under the action of external force so as to facilitate the clamping of the push rod 3 and the piston 2, one side of the petal body 302 far away from the axis of the push rod 3 is provided with a forward clamping buckle 301, when the push rod 3 is matched with the piston 2, the matched end enters the groove 201 of the piston 2, and the forward clamping buckle 301 distributed on the petal body 302 at the matched end is clamped with a reverse clamping buckle 202 on the piston 2.

When in installation, the cap 4 is sleeved into the front end of the medicine storage barrel, so that the sealing rib 404 on the inner side of the cap 4 is embedded into the first gap 103 on the medicine storage barrel 1, meanwhile, the sealing ring 102 on the medicine storage barrel 1 is clamped into the sealing groove 402 on the cap 4, then the hemostatic powder is injected into the medicine storage barrel 1 from the other end of the medicine storage barrel 1, and then the piston 2 is embedded into the inner wall of the medicine storage barrel 1. When the drug delivery device is used, the push rod 3 is directly pushed to the piston 2, the push rod 3 is clamped into the groove 201 of the piston 2 under the action of slight resistance, at the moment, the reverse buckle 202 of the piston 2 and the forward buckle 301 of the push rod 3 are matched and fixed, at the moment, the push rod 3 is pushed into the drug storage cylinder 1 by force, and rapid drug delivery can be realized.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The powder propelling device is characterized by comprising a medicine storage cylinder, a piston, a push rod and a cap, wherein one end of the push rod is in butt joint with the piston, the piston is arranged in an inner cavity of the medicine storage cylinder in a sliding manner, a plurality of petals are upwards distributed on an outlet end ring of the piston, and a first gap is reserved between every two adjacent petals; the cap cover is established outside the exit end of storing up the cartridge case, is equipped with sealing rib on the lid holds the cavity inner wall of local storing up the cartridge case, sealing rib and the first clearance one-to-one that the exit end was up, sealing rib embedding first clearance and shutoff first clearance.

2. A powder propelling device as in claim 1, wherein the outlet end of the cartridge is tapered and the lobes alternate with the first gaps along the outlet end of the cartridge and up the ring.

3. The powder pushing device of claim 2, wherein the cavity of the cap is a conical cavity, a bus surface of the conical cavity is provided with a sealing rib, and the outlet end of the cartridge can be inserted into the conical cavity of the cap.

4. A powder propelling device as claimed in claim 3, wherein the outer circumferential surface of the cartridge is embedded with a sealing ring, the inner wall of the conical cavity of the cap is provided with a sealing groove corresponding to the sealing ring, and the outer ring of the sealing ring can be clamped into the sealing groove.

5. The powder pushing device as claimed in claim 1, wherein the piston is connected to the push rod at one end thereof with an annular portion, and at the other end thereof with a blocking head, and an inner ring of the annular portion is fitted to an end portion of the push rod.

6. A powder pushing device as defined in claim 5, wherein the annular portion is divided into a plurality of sheet-like structures in an annular direction with a second gap between adjacent sheet-like structures, the sheet-like structures being compressible inwardly under radially inward force.

7. A powder propelling device according to claim 5 or claim 6 wherein the annular portion is tapered in diameter in an axial direction such that the outer ring of the annular portion forms a conical surface, the plug head being abutted against the small diameter end of the annular portion, the annular portion being abutted against the plug head to form a piston with a recess.

8. A powder propelling device as claimed in claim 6, wherein the sheet-like structure is provided with a reverse catch on a side facing the piston axis, the reverse catch being located in the recess, and the end of the push rod being provided with a forward catch cooperating with the reverse catch.

9. The powder pushing device as claimed in claim 1, wherein the rod core of the pushing rod is cross-shaped, one end of the rod core is provided with a matching end, the matching end comprises a plurality of petals circumferentially spaced apart, third gaps are formed between adjacent petals, and a structure in which the petals and the third gaps are alternately distributed is formed.

10. A powder pushing device as claimed in claim 9, wherein the side of the flap remote from the axis of the push rod is provided with a positive catch.