CN204520785U - A kind of Biopsy sampler - Google Patents

Abstract

The utility model discloses a biopsy puncture sampling device, which comprises: an operating handle provided with a propulsion mechanism; a puncture needle group connected with the propulsion mechanism and extending forward from the inside of the operating handle to the outside; and a protective needle cover , detachably mounted on the front end of the operating handle and axially sleeved on the periphery of the puncture needle set; wherein the puncture needle set has a hollow needle sheath and a puncture needle core axially penetrating through the needle sheath. The biopsy puncture sampling device is provided with a protective needle cover axially sleeved on the periphery of the puncture needle group at the front end of the operating handle, and when the biopsy puncture sampling device is used for biopsy surgery, it can prevent the puncture needle group from being separated from the tumor tissue after pulling out the tumor tissue. Contact with other healthy parts of the human body, so as to avoid the spread of tumor tissue and reduce the life threat to patients.

Description

A biopsy puncture sampling device

technical field

The utility model relates to a medical operation instrument, in particular to a biopsy puncture sampling device.

Background technique

Tumor is a disease that seriously endangers human health and life. In recent years, the incidence rate has gradually increased, and the age of onset has gradually decreased. Early detection, correct diagnosis, and timely treatment have an important impact on prognosis. With the continuous improvement of examination methods and methods, the correct rate of diagnosis has gradually increased, but there are still a large part of tumors that do not have typical imaging features, making diagnosis more difficult. A correct diagnosis requires a combination of clinical, imaging, and pathological factors. Among them, pathological diagnosis plays a key role in the selection of treatment options. Needle biopsy is the main way to obtain pathological diagnosis.

Among them, the biopsy puncture sampling device is a special surgical instrument for puncture biopsy, through which tumor tissue samples can be extracted for pathological research. The prior art discloses a biopsy puncture needle set, the biopsy puncture needle includes a hollow outer needle and a puncture needle core axially penetrating the outer needle. The puncture needle core can reduce the puncture resistance for the needle set when piercing the human body. When the needle set is inserted into the central part of the tumor tissue, the puncture needle core is taken out, and a syringe is connected to the pintle of the outer needle, and the tumor tissue is extracted with the syringe.

The above-mentioned biopsy needle group can easily spread to other parts of the human body due to the inability to control the path of tumor tissue sampling along the outer needle pullout. If the puncture is a conscience tumor, the impact will be small; if the puncture is a malignant tumor For tumors, direct sampling using the above-mentioned biopsy puncture needle group will cause the tumor tissue to spread rapidly to other parts of the human body, posing a great threat to the life of the patient.

Utility model content

In order to solve the above problems, the purpose of this utility model is to provide a biopsy puncture sampling device which can prevent tumor tissue from spreading during the puncture process.

In order to achieve the above object, the utility model adopts the following technical solutions:

A biopsy puncture sampling device has such features, including: an operating handle, provided with a propulsion mechanism; a puncture needle group, connected with the propulsion mechanism and extending forward from the inside of the operating handle to the outside; and a protective needle cover, detachably Installed on the front end of the operating handle and axially sleeved on the periphery of the puncture needle set; wherein the puncture needle set has a hollow needle sheath and a puncture needle core axially penetrating the needle sheath.

Further, in the biopsy puncture sampling device provided by the utility model, it can also have such features: the rear end of the protective needle cover is provided with a flange, and the front side wall of the operating handle is engaged with the flange; the puncture needle The length of the part of the group extending out of the operating handle is greater than the length of the protective needle cover.

Furthermore, in the biopsy puncture sampling device provided by the present invention, it may also have such a feature: the pintle of the needle sheath is tightly connected with the pintle of the puncture needle core by a hoop.

Further, in the biopsy puncture sampling device provided by the utility model, it can also have such a feature: the top of the operating handle is provided with a strip hole parallel to the puncture needle group, and the top inner sidewall of the operating handle is in the strip hole. There are travel baffles on both sides; the propulsion mechanism includes: a connecting rod located in the operating handle for clamping the pintle on the needle sheath, a push key that reciprocates along the strip hole for adjusting the front and rear positions of the connecting rod, and an elastic connection Springs for the travel stopper and linkage.

Furthermore, in the biopsy puncture sampling device provided by the present invention, it may also have such a feature: the operating handle is provided with scales showing the moving distance of the push button on both sides of the strip hole.

Furthermore, in the biopsy puncture sampling device provided by the present invention, it may also have such a feature: the top inner wall of the operating handle is provided with a set of positioning grooves at a position corresponding to each scale value on the scale.

Further, in the biopsy puncture sampling device provided by the utility model, it can also have such a feature: the push button is embedded with a limit button; wherein, the upper surface of the bottom plate of the limit button is provided with positioning teeth that engage with the positioning groove group Group, and, the lower end of limit button and the afterbody of connecting rod are connected by spring.

Furthermore, in the biopsy puncture sampling device provided by the present invention, it may also have such a feature: the tail part of the connecting rod and the push key are fastened and connected by screws.

Further, in the biopsy puncture sampling device provided by the present invention, it may also have such a feature: the rear end side wall of the operating handle is provided with a syringe inlet.

The positive effect that the utility model has on the above-mentioned basis is:

The biopsy puncture sampling device provided by the utility model can prevent the puncture needle group from being pulled out when the biopsy puncture sampling device is used to perform a puncture biopsy operation by arranging a protective needle sleeve axially sleeved on the periphery of the puncture needle group at the front end of the operating handle. After the tumor tissue is removed, it is in contact with other healthy parts of the human body, so as to avoid the spread of the tumor tissue and reduce the life threat to the patient.

Description of drawings

Fig. 1 is a three-dimensional structural schematic diagram of a biopsy puncture sampling device in an embodiment of the present invention.

Fig. 2 is a half-sectional schematic diagram of the biopsy puncture sampling device in the embodiment of the present invention.

Fig. 3 is a schematic structural view of the puncture needle set in the embodiment of the present invention.

FIG. 4 is an enlarged view corresponding to the part of letter A in FIG. 2 .

Fig. 5 is a three-dimensional structural schematic diagram of the limit button in the embodiment of the present utility model.

Fig. 6 is a schematic diagram of the connection between the biopsy puncture sampling device and the syringe in the embodiment of the present utility model.

Detailed ways

In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the following embodiments will specifically illustrate the biopsy puncture and sampling device provided by the present invention in conjunction with the accompanying drawings.

As shown in FIG. 1 , the biopsy puncture and sampling device provided in this embodiment includes: an operating handle 1 , a puncture needle set 2 (as shown in FIG. 3 ), and a protective needle cover 3 .

Specifically, as shown in FIGS. 2 to 3 , the operating handle 1 is provided with a propulsion mechanism 4 , and the puncture needle set 2 is connected to the propulsion mechanism 4 and extends from the inside of the operating handle 1 to the outside. In this embodiment, the puncture needle set 2 has a hollow needle sheath 21 and a puncture needle core 22 axially penetrating through the needle sheath 21, and the pintle of the needle sheath 21 and the needle pintle of the puncture needle core 22 are tightened by a hoop 23. Fixed connection. The separation of the needle sheath 21 and the puncture needle core 22 can be realized by removing the hoop 23 .

As shown in FIG. 4 , the protective needle sheath 3 is detachably mounted on the front end of the operating handle 1 and axially sleeved on the periphery of the puncture needle set 2 . Specifically, the rear end of the protective needle cover 3 is provided with a flange 31 , and the front side wall of the operating handle 1 is engaged with the flange 31 . In addition, as a preferred technical solution, the length of the portion of the puncture needle set 2 extending out of the operating handle 1 is greater than the length of the protective needle sheath 3 .

As shown in Figures 1 and 2, in this embodiment, the top of the operating handle 1 is provided with a strip-shaped hole 11 parallel to the puncture needle group 2, and the top inner sidewall of the operating handle 1 is on both sides of the strip-shaped hole 11. A travel baffle 12 is provided on the side.

In this embodiment, the propulsion mechanism 4 includes: a connecting rod 41 located in the operating handle 1 for clamping the pintle on the needle sheath 21, and a push button for adjusting the front and rear positions of the connecting rod 41 by reciprocating movement along the strip hole 11 42, and the spring 43 elastically connecting the stroke baffle plate 12 and the connecting rod 41. Wherein, the tail portion of the connecting rod 41 is tightly connected with the push key 42 by a screw 44 .

As a preferred technical solution, the operating handle 1 is provided with scales on both sides of the bar-shaped hole 11 to display the moving distance of the push button 42 . Moreover, a positioning groove group 46 is provided on the top inner wall of the operating handle 1 at a position corresponding to each scale value 45 on the scale.

Correspondingly, as shown in FIG. 2 and FIG. 5 , the push key 42 is embedded with a limit button 5 . Wherein, the bottom surface of the limit button 5 is provided with a positioning tooth set 51 engaged with the positioning groove set 46 , and the lower end of the limit button 5 is connected with the tail of the connecting rod 41 by a spring 47 .

In addition, as shown in FIG. 1 and FIG. 6 , the rear end side wall of the operating handle 1 is provided with a syringe inlet 13 , and the pintle of the needle sheath 21 can coincide with the nipple of the syringe 6 . When the puncture needle core 22 is removed, the syringe 6 is connected with the needle sheath 21, and by pulling the plunger rod of the syringe 6, the tumor tissue can be sucked into the barrel of the syringe 6 by vacuum suction, thereby completing the mass removal process. For tissue puncture sampling, after the puncture sampling is completed, the needle sheath 21 and the protective needle sheath 3 can be pulled out in sequence.

The biopsy puncture and sampling device provided in this embodiment is provided with a protective needle sleeve axially sleeved on the periphery of the puncture needle group at the front end of the operating handle. After the tumor tissue is removed, it is in contact with other healthy parts of the human body, so as to avoid the spread of the tumor tissue and reduce the life threat to the patient.

Of course, the biopsy puncture sampling device involved in the present invention is not limited to the structure in this embodiment, and any equivalent modifications and substitutions to the present invention are also within the scope of the present invention.

Claims (9)

1. A biopsy puncture sampling device, characterized in that, comprising: The operating handle is provided with a propulsion mechanism; a puncture needle set connected to the advancing mechanism and extending forward from the inside to the outside of the operating handle; and A protective needle cover, detachably mounted on the front end of the operating handle and axially sleeved on the periphery of the puncture needle group; Wherein, the puncture needle set has a hollow needle sheath and a puncture core axially penetrating through the needle sheath. 2. The biopsy puncture sampling device according to claim 1, characterized in that: The rear end of the protective needle cover is provided with a flange, and the front side wall of the operating handle is engaged with the flange; The length of the portion of the puncture needle set extending out of the operating handle is greater than the length of the protective needle sheath. 3. The biopsy puncture sampling device according to claim 1 or 2, characterized in that: The pintle of the needle sheath is tightly connected with the pintle of the puncture needle core by a hoop. 4. The biopsy puncture sampling device according to claim 1, characterized in that: The top of the operating handle is provided with a bar-shaped hole parallel to the puncture needle group, and the inner wall of the top of the operating handle is provided with travel baffles on both sides of the bar-shaped hole; The propulsion mechanism includes: a connecting rod located in the operating handle for clamping the pintle on the needle sheath, a push key that reciprocates along the strip hole for adjusting the front and rear positions of the connecting rod, and an elastic A spring connecting the travel baffle and the connecting rod. 5. The biopsy puncture sampling device according to claim 4, characterized in that: The operating handle is provided with scales on both sides of the strip hole to display the moving distance of the push key. 6. The biopsy puncture sampling device according to claim 4, characterized in that: The top inner wall of the operating handle is provided with a set of positioning grooves at a position corresponding to each scale value on the scale. 7. The biopsy puncture sampling device according to claim 6, characterized in that: The push key is embedded with a limit button; Wherein, the upper surface of the bottom plate of the limit button is provided with a set of positioning teeth engaged with the set of positioning grooves, and the end surface of the limit button is connected to the tail of the connecting rod by a spring. 8. The biopsy puncture sampling device according to claim 4, characterized in that: The afterbody of the connecting rod is tightly connected with the push key by screws. 9. The biopsy puncture sampling device according to claim 1, characterized in that: The rear end side wall of the operating handle is provided with a syringe inlet.