CN212547835U

CN212547835U - Built-in multifunctional extensible trocar

Info

Publication number: CN212547835U
Application number: CN202020177725.9U
Authority: CN
Inventors: 李文君; 李霞; 李琳; 李全民; 杜瑞琴; 胡小强; 朱艳秋
Original assignee: Rocket Force Characteristic Medical Center of PLA
Current assignee: Rocket Force Characteristic Medical Center of PLA
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2021-02-19
Anticipated expiration: 2030-02-17

Abstract

The utility model discloses a built-in multifunctional extensible trocar, which comprises a main body part, wherein the front end of the main body part is provided with a tube needle, and the outside of the tube needle is provided with a sleeve; a sleeve push rod is concentrically arranged inside the main body part, and a tube needle push rod is concentrically arranged inside the sleeve push rod; the sleeve push rod is connected with the sleeve through a steel wire so as to drive the sleeve to move along the axis of the tube needle; the side wall of the main body part is detachably provided with a blood sampling device. The utility model provides a built-in multi-functional trocar that can prolong, its is rational in infrastructure, and the problem that the trocar drops easily in the use has been solved in the simple operation, sets up blood sampling function and infusion function simultaneously, has good spreading value.

Description

Built-in multifunctional extensible trocar

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a built-in multi-functional extension trocar.

Background

A medical trocar is a widely used medical instrument. Taking a common disposable intravenous infusion needle as an example, the disposable intravenous infusion needle mainly comprises a protective cap, a steel needle, a needle seat, a needle wing and a connecting pipe. When in use, medical care personnel firstly take off the protective cap covered on the steel needle, then use the steel needle to puncture the vein, see the blood back and perform transfusion after confirming the puncture success. In the whole process of infusion, the steel needle is always left in the blood vessel, however, because the needle point of the steel needle is very sharp, the patient stretches the limb during infusion, and the probability of puncturing the blood vessel by the steel needle is very high, especially for children and mental patients.

In the prior art, because the blood vessel of children or old people is short, the trocar is easy to be separated after puncturing the blood vessel, thereby influencing the normal use of the trocar.

Patent CN206792743U discloses a safety medical trocar and intravenous infusion needle with a back-pumping guide structure, the trocar includes: a catheter seat, an indwelling catheter, a needle seat and a puncture needle. One end of the puncture needle is fixed on the needle seat, and the puncture needle and the needle seat are of hollow structures which are communicated with each other; wherein, the trocar comprises a puncture state and an indwelling state; in the puncture state, the puncture needle is placed in the indwelling catheter; in the indwelling state, the puncture needle is placed in the catheter seat; the trocar is changed from a puncture state to an indwelling state by withdrawing the needle base; the trocar also comprises a withdrawing component which is used for drawing the needle base so as to ensure that the trocar is changed into an indwelling state from a puncture state; and the inner surface and the outer surface of the catheter seat are provided with withdrawing guide structures for guiding the withdrawing component and the needle seat to conduct withdrawing. The utility model discloses a medical trocar not only can effectively prevent the accidental injury, is showing the risk that has reduced medical trocar's follow-up recovery processing moreover. But is believed to solve the problem of the trocar easily falling off during use.

Therefore, there is a need to design a multifunctional built-in extendable trocar to solve the technical problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above technical problem, the utility model provides a pair of built-in multi-functional trocar that can prolong, its is rational in infrastructure, and the problem that the trocar drops easily in the use has been solved in the simple operation, sets up blood sampling function and infusion function simultaneously, has good spreading value.

In order to solve the technical problem, the utility model provides a built-in multifunctional extensible trocar, which comprises a main body part, wherein a tube needle is arranged at the front end of the main body part, and a sleeve is arranged outside the tube needle; a sleeve push rod is concentrically arranged inside the main body part, and a tube needle push rod is concentrically arranged inside the sleeve push rod; the sleeve push rod is connected with the sleeve through a steel wire so as to drive the sleeve to move along the axis of the tube needle; the side wall of the main body part is detachably provided with a blood sampling device.

In some embodiments, the sleeve is an extendable sleeve formed from a plurality of sleeves that are nested one over the other.

In some embodiments, the outer side wall of the cannula push rod is provided with scale lines to indicate the advancing distance of the cannula push rod.

In some embodiments, the blood sampling device comprises a steel needle, a blood sampling one-way valve is arranged at the installation position of the blood sampling device and is arranged on the main body part, and blood flowing out of a human blood vessel is transmitted to the blood sampling end through the sleeve, the main body part and the steel needle.

In some embodiments, the lancing device is sealingly connected to the body portion.

In some embodiments, a barrier pad is disposed on the rear side of the junction of the lancing device and the internal chamber of the main body to form a sealed chamber for lancing of the lancing device.

In some embodiments, the stylet is pulled by the stylet plunger and separated from the body portion through the septum which may still form a blood collection sealed chamber.

In some embodiments, the built-in multifunctional extendable trocar further comprises an infusion set detachably disposed on an outer sidewall of the body portion; the joint of the main body part is provided with an infusion one-way valve, and liquid to be input is input into a blood vessel of a human body through the infusion one-way valve, the main body part and the sleeve.

In some embodiments, the infusion device and the blood sampling device are symmetrically arranged on the outer side wall of the main body part.

In some embodiments, the steel needle is externally sheathed with a protective cap.

The utility model discloses beneficial effect:

the utility model provides a pair of built-in multi-functional trocar that can prolong, its is rational in infrastructure, and the problem that the trocar drops easily in the use has been solved to the simple operation, sets up blood sampling function and infusion function simultaneously, has good spreading value.

Drawings

The above advantages of the present invention will become more apparent and more readily appreciated from the detailed description taken in conjunction with the following drawings, which are given by way of illustration only and do not limit the present invention, and in which:

fig. 1 is a schematic structural view of a built-in multifunctional extendable trocar according to the present invention;

FIG. 2 is a schematic view of the installation of the barrier mat in the embodiment of FIG. 1;

fig. 3 is a schematic structural view of the blood sampling check valve of the present invention.

In the figure:

10. a main body portion; 11. a blood sampling one-way valve; 12. a barrier pad; 20. a tube needle; 30. a sleeve; 40. a sleeve push rod; 41. scale lines; 50. a tube needle push rod; 60. a steel wire; 70. a blood collection device; 71. a steel needle; 72. a protective cap; 80. an infusion device.

Detailed Description

A multi-functional, extendable trocar as described herein will now be described in detail with reference to the following detailed description and accompanying drawings.

The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.

The drawings in the present specification are schematic views to assist in explaining the concept of the present invention, and schematically show the shapes of the respective portions and the mutual relationships thereof. Note that, in order to clearly show the structure of each component of the embodiment of the present invention, the same reference numerals are used to denote the same parts.

The structure of the built-in multifunctional extensible trocar of the present invention is schematically shown in fig. 1, and the built-in multifunctional extensible trocar comprises a main body part 10, a tube needle 20 is arranged at the front end of the main body part 10, and a sleeve 30 is arranged outside the tube needle 20; a cannula push rod 40 is concentrically arranged inside the main body part 10, and a cannula push rod 50 is concentrically arranged inside the cannula push rod 40; the sleeve push rod 40 is connected with the sleeve 30 through a steel wire 60 so as to drive the sleeve 30 to move along the axis of the tube needle 20; the side wall of the main body 10 is detachably provided with a blood collection device 70.

In the embodiment shown in fig. 1, the steel wires 60 are connected between the outer end of the cannula push rod 40 and the cannula 30, and the number of the steel wires 60 is a pair, which has certain rigidity so as to provide certain pushing force to the cannula 30, effectively prevent the cannula 30 from falling off, and ensure the normal use of the trocar.

As an embodiment of the present invention, the sleeve 30 is an extendable sleeve formed by a plurality of sleeve layers. It will be appreciated that other forms of technical solution may be used for the protracting function of the sleeve 30.

In the embodiment shown in fig. 1, the outer side wall of the cannula push rod 40 is provided with a graduation mark 41 to indicate the advancing distance of the cannula push rod 40 so as to accurately detect the moving distance of the cannula 30 connected to the front end of the cannula push rod 40.

In some embodiments, the blood collecting device 70 comprises a steel needle 71, a blood collecting check valve 11 is disposed at the installation position of the blood collecting device 70, and is disposed on the main body 10, and blood flowing out of a human blood vessel is transmitted to the blood collecting end through the cannula 30, the main body 10 and the steel needle 71. Fig. 3 is a schematic structural view of the blood sampling check valve 11, which is a check ball valve, and fluid can be transmitted to the blood sampling end only through the sleeve 30, the main body 10 and the steel needle 71 to prevent blood backflow during blood sampling. As one aspect of the embodiment, the steel needle 71 is externally sleeved with a protective cap 72 to prevent the steel needle 71 from being contaminated and prevent the steel needle 71 from accidentally injuring a patient or medical staff.

In one aspect of this embodiment, the lancing device 70 is sealingly connected to the body portion 10. In the embodiment shown in fig. 3, the lancing device 70 is connected to the main body 10 using a threaded configuration, although it will be appreciated that other sealing connections may be used.

A barrier pad 12 is disposed at the rear side of the junction between the blood collection device 70 and the internal cavity of the main body 10, as shown in fig. 2, to form a sealed cavity for collecting blood from the blood collection device 70. In some embodiments, the barrier pad 12 may be a medical grade rubber pad, and the stylet 20 is pulled by the stylet plunger 50 and separated from the body 10 through the barrier pad 12, and the barrier pad 12 may still form a blood collection sealing chamber.

As another embodiment of the present invention, the built-in multifunctional extendable trocar further comprises an infusion set 80 detachably disposed on the outer sidewall of the main body 10; the joint of the main body part 10 is provided with an infusion one-way valve, and the liquid to be infused is infused into the blood vessel of the human body through the infusion one-way valve, the main body part 10 and the sleeve 30.

In the present invention, the infusion device 80 and the blood sampling device 70 are symmetrically disposed on the outer side wall of the main body 10, so as to provide a larger working space for medical staff. In order to facilitate the connection between the blood sampling device 70 and the infusion device 80 and the main body 10, a through rectangular groove is arranged at the corresponding position of the cannula push rod 40, so that the pipeline and components connected with the blood sampling device 70 and the infusion device 80 can pass through the cannula push rod 40, and the normal push-pull operation of the cannula push rod 40 can also be ensured.

Compared with the prior art, the utility model provides a pair of built-in multi-functional trocar that can prolong, its is rational in infrastructure, and the problem that the trocar drops easily in the use has been solved to the simple operation, sets up blood sampling function and infusion function simultaneously, has good spreading value.

The present invention is not limited to the above embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is included in the technical solution that is the same as or similar to the present invention.

Claims

1. A built-in multifunctional extensible trocar is characterized by comprising a main body part, wherein a trocar is arranged at the front end of the main body part, and a cannula is arranged outside the trocar; a sleeve push rod is concentrically arranged inside the main body part, and a tube needle push rod is concentrically arranged inside the sleeve push rod; the sleeve push rod is connected with the sleeve through a steel wire so as to drive the sleeve to move along the axis of the tube needle; the side wall of the main body part is detachably provided with a blood sampling device.

2. The built-in multi-functional extendable trocar of claim 1, wherein the cannula is an extendable cannula formed from a plurality of sections of cannula sleeves stacked one on top of the other.

3. The built-in multifunctional extendable trocar according to claim 1, wherein the outer side wall of the cannula push rod is provided with scale lines to indicate the advancing distance of the cannula push rod.

4. The built-in multifunctional extendable trocar according to claim 1, wherein the blood sampling device comprises a steel needle, a blood sampling check valve is arranged at the installation position of the blood sampling device and is arranged on the main body part, and blood flowing out of a human blood vessel is transmitted to the blood sampling end through the sleeve, the main body part and the steel needle.

5. The built-in multifunctional extendable trocar according to claim 1, wherein the blood collection set is sealingly connected to the body portion.

6. The multifunctional built-in extensible trocar according to claim 1, wherein a barrier pad is disposed at a rear side of a connection portion of the blood collection device and the inner cavity of the main body to form a closed cavity for collecting blood of the blood collection device.

7. The built-in multifunctional extendable trocar according to claim 6, wherein the trocar is pulled by a trocar push rod and separated from the body portion through the blocking pad, which still forms a blood collection sealing chamber.

8. The built-in multifunctional extendable trocar according to claim 1, further comprising an infusion device detachably disposed on an outer sidewall of the main body portion; the joint of the main body part is provided with an infusion one-way valve, and liquid to be input is input into a blood vessel of a human body through the infusion one-way valve, the main body part and the sleeve.

9. The built-in multifunctional extendable trocar according to claim 8, wherein the infusion device and the blood sampling device are symmetrically arranged on the outer side wall of the main body part.

10. The built-in multifunctional extendable trocar according to claim 4, wherein the steel needle is externally sheathed with a protective cap.