CN213606529U - Collection device - Google Patents

Abstract

The utility model discloses a collecting device, which comprises a needle head, a negative pressure tube and an injector; the tail part of the needle head is inserted into and hermetically fixed in the negative pressure pipe; the tail part of the injector is inserted into and sealed in the negative pressure pipe; the injector seals the end face of the tail of the needle when not pressed down and opens the end face of the tail of the needle when pressed down. This collection system utilizes the negative pressure pipe to provide suction to the syringe needle, inserts at this collection save set's syringe needle and treats the position back of gathering, and this operator can hold with one hand and press the injector, makes the intercommunication of syringe needle and negative pressure pipe, and then realizes that the syringe needle is automatic to absorb the sample of treating the position of gathering. Compared with the prior art that the injector is cooperatively operated by multiple persons, the collecting and storing device is convenient and simple to operate, can meet the independent use requirement of one operator, and reduces the labor cost and the risk caused by cooperative operation of multiple persons.

Description

Collection device

Technical Field

The utility model relates to a medical treatment detection area especially relates to a collection system.

Background

Uveitis can be diagnosed by detection of ocular fluid in a patient. The detection of ocular fluid is mainly performed by taking the anterior aqueous humor of a patient to obtain a sample. At present, the method for collecting anterior chamber water is that under a slit lamp, 1 doctor uses a 1ml sterile syringe needle to perform anterior chamber puncture on eyes of a patient, after the needle enters the anterior chamber, 1 assistant is matched with a slowly-drawn syringe core rod to enable the anterior chamber water to slowly flow into a needle cylinder, and after the dosage is detected, a doctor pulls out the needle. After the aqueous humor is collected, the sample in the 1ml sterile syringe is transferred to a 1.5ml EP tube, and the 1.5ml EP tube and the sample therein are sent for testing. In the operation process, due to the limited operation space, the two people are easy to stab the normal tissues of the eyes of the patients by the needles due to improper force application or different directions, and have the adverse consequences of traumatic cataract, hematuresis in the anterior chamber and the like.

Although the above-mentioned collection process can also be independently completed by 1 doctor under the operating microscope of the operating room, the safety and efficiency of the collection process are greatly reduced, and based on the operating room management system, not only the sampling preparation steps and preparation time are increased, but also the auxiliary personnel under the table are increased, thereby greatly increasing the sampling cost and increasing the economic burden and time cost of the patient.

In summary, how to improve the safety of collecting the intraocular fluid sample and reduce the collection cost becomes a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a collection system can reduce the cost of labor and the time cost of collection, improves operation accuracy and security.

In order to achieve the purpose, the utility model provides a collecting device, which comprises a needle head, a negative pressure tube and an injector; the tail part of the needle head is inserted into and hermetically fixed in the negative pressure pipe; the tail part of the injector is inserted into and sealed in the negative pressure pipe; the injector seals the end face of the tail of the needle when not pressed down and opens the end face of the tail of the needle when pressed down.

Preferably, the tail part of the injector is provided with a plugging part; the blocking part is glued and sealed on the tail end face of the needle head when the injector is not pressed.

Preferably, the tail part of the injector is also provided with a hole which is radially penetrated and is used for communicating the needle head with the negative pressure tube when the end face of the tail part of the needle head is aligned; the hole is located above the blocking portion.

Preferably, the rear portion of the injector comprises a link located above the blockage; the radial dimension of the connecting rod is smaller than the dimension of the tail end face of the needle.

Preferably, the head of the injector is provided with a flat injector cap.

Preferably, the inner side of the injector cap has a sealing and adhering surface for adhering to the outer tube wall of the negative pressure tube.

Preferably, the needle is coaxially connected with the negative pressure pipe; the tail part of the needle head is spirally connected and sealed in the negative pressure pipe through rubber.

Preferably, the surface of the negative pressure pipe is provided with scale marks.

Preferably, the negative pressure tube is embodied as a vacuum tube.

Preferably, a needle cap is further included to seal off the head of the needle.

Compared with the prior art, the utility model provides a collection system includes syringe needle, negative pressure pipe and injector. In the collecting device, the tail part of the needle head and the tail part of the injector are inserted into the negative pressure pipe, the needle head is fixedly connected with the negative pressure pipe in a sealing way, and the injector is connected with the negative pressure pipe in a sliding and sealing way.

The injector of the acquisition device blocks the end surface of the tail part of the needle head when not pressed down, and plays a role in isolating the inner cavity of the needle head from the inner cavity of the negative pressure tube; the end face of the tail part of the needle head is opened when the injector is pressed down, so that the communication between the inner cavity of the needle head and the inner cavity of the negative pressure tube is realized. Based on this structure connection, the operator accessible is pressed the injector and is realized that the syringe needle is automatic to be extracted external sample to in the negative pressure pipe, and it is visible, when the operator used this collection device to gather external sample, its action of holding this collection device and the action of pressing the injector coordinate each other, can satisfy single one-hand operation. Therefore, compared with the condition that the injector adopted in the prior art needs at least two persons to cooperate, the acquisition device can meet the requirement of single-person operation, is favorable for reducing the labor cost of sample acquisition, and simultaneously avoids the operation risk caused by multi-person cooperation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an acquisition device according to an embodiment of the present invention;

fig. 2 is a cross-sectional view at a-a of fig. 1.

Wherein, 1-needle head, 2-negative pressure tube, 3-injector, 31-injector cap, 32-hole, 4-needle head cap, 5-graduation line.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an acquisition device according to an embodiment of the present invention; fig. 2 is a cross-sectional view at a-a of fig. 1.

The utility model provides a collecting device, including syringe needle 1, negative pressure pipe 2 and injector 3.

In the embodiment, the tail part of the needle head 1 is inserted into the negative pressure tube 2, and the needle head and the negative pressure tube are sealed and fixed at the joint; the tail part of the injector 3 is inserted into the negative pressure tube 2 and the injector and the negative pressure tube are connected in a sliding way, and the injector 3 and the negative pressure tube 2 realize air sealing at the connection part; the tail part of the injector 3 is closely adjacent to the tail part of the needle head 1, when the injector 3 is not pressed downwards by an operator, the tail part of the needle head 1 is blocked, and at the moment, the tube cavity in the needle head 1 is not communicated with the tube cavity in the negative pressure tube 2; when injector 3 is pressed downwards by the operator, the afterbody of syringe needle 1 is opened, and the lumen in this moment and the lumen intercommunication in the negative pressure pipe 2, negative pressure pipe 2 provides the suction of the sample of treating gathering of the inside extraction to syringe needle 1 to the absorption of the sample of treating gathering of realization syringe needle 1.

In order to facilitate the handling of the collecting device, the pressing down of the plunger 3 is specifically referred to as pressing the plunger 3 in the direction of the suction tube 2.

In this embodiment, the needle 1 is used for inserting into a collection site to collect a sample, for example, when the collection device is used for intraocular fluid detection, the needle 1 is used for puncturing by inserting into anterior chamber water of an eye of a patient. When the operator presses the injector 3 to communicate the tail part of the needle 1 with the negative pressure tube 2, the needle 1 can automatically suck the anterior chamber water and the vitreous humor in the anterior chamber water of the patient.

Compare in the syringe that prior art used needs many people to operate in coordination, the utility model provides a collection save set utilizes negative pressure pipe 2 to provide suction to syringe needle 1, during the operation, an operator can hold this collection save set by one hand, insert at this collection save set's syringe needle 1 and treat the position back of gathering, this operator can be on the basis of holding this collection save set, the finger that utilizes same hand presses injector 3, realize syringe needle 1 and negative pressure pipe 2's intercommunication, and then realize that syringe needle 1 automatic absorption treats the sample of gathering the position. After the operator collects a sufficient sample, the operator holds the collecting and storing device to move in the direction far away from the part to be collected, so that the needle head 1 is separated from the part to be collected, and the collecting operation is completed.

To sum up, this collection save set convenient operation, simple can satisfy an operator's independent utility, need not many people cooperative operation, reduces the risk that brings because of many people cooperative operation, has also reduced the cost of labor.

The gas static tank provided by the present invention will be further described with reference to the accompanying drawings and embodiments.

As shown in fig. 1 and fig. 2, in the present invention, the tail of the needle 1 can be plugged by the tail of the injector 3, that is, when the operator does not use the collecting device, the tail of the injector 3 and the tail end surface of the needle 1 are tightly attached to each other, and the two can be hermetically connected by gluing, plugging, etc. to maintain the negative pressure state in the negative pressure tube 2; when the operator presses the injector 3, the tail part of the injector 3 is separated from the tail end surface of the needle 1, and the negative pressure tube 2 is communicated with the needle 1.

In addition, the tail part of the needle head 1 can be automatically plugged by adopting sealant and the like, namely, when an operator does not use the acquisition device, the end surface of the tail part of the needle head 1 realizes air sealing through the sealant, and the tail part of the injector 3 is separated from the tail part of the needle head 1; when an operator presses the injector 3, the tail part of the injector 3 moves towards the sealant at the tail part of the needle head 1 and pushes the sealant, and the needle head 1 is communicated with the negative pressure pipe 2 after the sealant falls off.

Illustratively, the rear portion of the injector 3 is provided with a stopper portion which is glued and sealed to the rear end face of the needle 1 when the injector 3 is not pressed. Referring to fig. 2, the blocking portion is located at the bottom end of the tail portion of the syringe 3, and has a size larger than the size of the tail end face of the needle 1, so as to be smoothly attached to the tail end face of the needle 1. The plugging part is fixedly connected to the needle head 1 in an adhesive mode, and the plugging part needs to be separated from the needle head 1 when the injector 3 is pressed, so that the plugging part and the needle head 1 are appropriately adhered to meet the air sealing requirement and the operation requirement of an operator.

In order to realize the communication between the needle 1 and the negative pressure tube 2 after the injector 3 is pressed, a hole 32 which is radially through is also arranged at the tail part of the injector 3. The hole 32 is located above the blocking portion, when the operator does not press the syringe 3 yet, the blocking portion is adhered to the tail end face of the needle 1, and when the operator presses the syringe 3 downwards, the blocking portion and the hole 32 both move downwards, so that the blocking portion is separated from the tail end face of the needle 1, and the hole 32 is aligned to the tail end face of the needle 1. Therefore, when the collecting device is used, the hole 32 and the plugging part alternately contact the tail part of the needle head 1, and the plugging part is used for plugging the tail part of the needle head 1 and maintaining the negative pressure state of the negative pressure tube 2; the hole 32 is used for realizing the communication between the tail part of the needle 1 and the negative pressure tube 2 and realizing that the negative pressure tube 2 provides suction for the needle 1.

Besides the arrangement of the hole 32 to realize the communication between the needle 1 and the negative pressure tube 2, the collection device can also realize the communication between the needle 1 and the negative pressure tube 2 by utilizing the gap between the injector 3 and the tail end surface of the needle 1. In short, when the operator presses the injector 3, the tail of the injector 3 is separated from the end face of the tail of the needle 1, for example, the tail of the injector 3 is offset from the end face of the tail of the needle 1, and the two are separated from each other due to their relative positions; or the tail part size of the injector 3 is smaller than the tail end face size of the needle 1, and the size difference between the tail part size and the tail end face size generates a gap.

Taking the tail size of the injector 3 to be smaller than the tail end face size of the needle 1 as an example, the tail of the injector 3 can comprise a plugging part and a connecting rod positioned above the plugging part, the size of the plugging part is larger than the size of the tail end face of the needle 1, the effect of sealing the needle 1 and the negative pressure tube 2 is achieved, and the radial size of the connecting rod is smaller than the size of the tail end face of the needle 1. When an operator presses the syringe 3, the connecting rod drives the plugging part to move downwards, and after the plugging part is separated from the tail end face of the needle 1, the connecting rod cannot completely shield the tail end face of the needle 1 due to the fact that the radial size of the connecting rod is smaller than that of the tail end face of the needle 1, so that the tail end face of the needle 1 is communicated with the negative pressure pipe 2.

In order to facilitate the use, the utility model provides an in the collection device, the head of injector 3 is equipped with flat injector cap 31. The injector cap 31 is used for the finger of the operator to be attached to realize pressing, and the pressing amount of the injector 3 relative to the negative pressure tube 2 is conveniently controlled.

Further, the inside of the injector cap 31 has a sealing surface for adhering to the outer tube wall of the negative pressure tube 2. The specific shape of the sealing joint surface depends on the shape of the negative pressure tube 2, for example, when the negative pressure tube 2 is a cylindrical tube, the sealing joint surface can be a curved surface with an upward concave middle part, and the curvature of the sealing joint surface is equal to the radius of the outer tube wall of the negative pressure tube 2. The collecting device can be set to be a sealing joint surface which is tightly jointed with the outer pipe wall of the negative pressure pipe 2 when the pressing amount of the injector 3 is maximum, so that the sealing degree of the injector 3 and the negative pressure pipe 2 is improved through the shape matching of the sealing joint surface and the outer pipe wall of the negative pressure pipe 2.

Considering that when the collection device finishes collecting, a large air pressure difference may still exist inside and outside the negative pressure tube 2, therefore, the cap 31 of the injector can also be tightly attached to the outer tube wall of the negative pressure tube 2 through deformation under the air pressure difference.

The collecting device can enable the needle head 1 and the negative pressure tube 2 to be coaxially connected to form a slender rod-shaped structure, and is convenient for an operator to hold with one hand. Wherein, the afterbody of syringe needle 1 can adopt screw-thread fit's connected mode fixed connection negative pressure pipe 2, and syringe needle 1 and the junction of negative pressure pipe 2 two are equipped with rubber seal structure.

The head of the needle head 1 can be set to be 4.5 in size, so that the puncture is convenient; the type of the tail part of the needle head 1 can be set to be 13, so that the needle head 1 and the injector 3 can be conveniently plugged and exposed.

The surface of the negative pressure tube 2 may be provided with graduation marks 5 for marking the amount of the specimen to be detected sucked therein, such as the aforementioned anterior chamber water and vitreous humor. For example, the negative pressure tube 2 is a U-shaped tube made of polypropylene material, the volume of the tube is 1ml, and the wall of the tube is provided with scale marks 5, so that the sample volume can be conveniently obtained during sampling and storage.

Furthermore, the negative pressure tube 2 may be provided as a vacuum tube. When the collecting and storing device is used, an operator can adjust the speed of the needle head 1 for sucking a sample to be detected by adjusting the size of a gap between the tail part of the injector 3 and the tail end face of the needle head 1. Of course, the initial pressure of the negative pressure tube 2 can be set to other values less than the external atmospheric pressure according to the specific application of the collecting and storing device and the collecting amount of the sample to be detected.

The utility model also provides a concrete embodiment, this embodiment in addition to above-mentioned structure, still include the syringe needle cap 4 that is used for the head of sealed shutoff syringe needle 1. The needle cap 4 can seal the head of the needle 1 by covering and buckling the head of the needle 1, so as to realize the sealing of the collecting device after the collection is finished. Based on this structure, this collection system not only can realize the automatic acquisition function of one-man operation, can also realize the integration of collection and storage, need not in addition shift the sample of gathering to specific container in measure and the storage, can avoid the waste and the pollution that the sample caused at the transfer in-process.

It is right above the utility model provides a collection system has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. An acquisition device is characterized by comprising a needle head (1), a negative pressure tube (2) and a syringe (3); the tail part of the needle head (1) is inserted into and hermetically fixed in the negative pressure pipe (2); the tail part of the injector (3) is inserted into and sealed in the negative pressure pipe (2); the injector (3) seals the tail end face of the needle (1) when not pressed down and opens the tail end face of the needle (1) when pressed down.

2. The collecting device according to claim 1, characterized in that the tail of the injector (3) is provided with a plugging part; the blocking part is glued and sealed on the tail end face of the needle head (1) when the injector (3) is not pressed.

3. The collecting device according to claim 2, characterized in that the rear part of the injector (3) is further provided with a hole (32) which is radially through and is used for communicating the needle (1) and the negative pressure tube (2) when the rear end face of the needle (1) is aligned; the hole (32) is located above the blocking portion.

4. The collecting device according to claim 2, characterized in that the tail of the injector (3) comprises a link above the blockage; the radial size of the connecting rod is smaller than the size of the tail end face of the needle (1).

5. The collecting device according to claim 1, characterized in that the head of the injector (3) is provided with a flat injector cap (31).

6. Collection device according to claim 5, characterized in that the inside of the injector cap (31) has a sealing abutment to abut against the outer tube wall of the negative pressure tube (2).

7. The collecting device according to claim 1, characterized in that the needle (1) is coaxially connected with the negative pressure tube (2); the tail part of the needle head (1) is in spiral connection and is sealed in the negative pressure pipe (2) through rubber.

8. The collecting device according to claim 1, characterized in that the surface of the negative pressure tube (2) is provided with graduation marks (5).

9. The collecting device according to claim 1, characterized in that the negative pressure tube (2) is embodied as a vacuum tube.

10. The collecting device according to any of claims 1 to 9, further comprising a needle cap (4) for sealing off the head of the needle (1).

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