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Kidney puncture instrument for biopsy

A technology of biopsy and instruments, applied in the direction of puncture needle, application, inoculation and ovulation diagnosis, etc., can solve the problems of patient pain, mixed skin and flesh tissue, and affect the accuracy of pathological diagnosis, and achieve rapid sampling operation and realize the effect of sampling operation

Active Publication Date: 2020-11-17
中国人民解放军西部战区总医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional negative pressure suction puncture needle adopts a hollow puncture needle, the tip of the puncture needle is set on an inclined plane, and the tail end of the puncture needle is connected with a negative pressure device such as a syringe. The blade surface of the nozzle will simultaneously cut off the skin and flesh tissue and hide it in the needle tube, which not only brings great pain to the patient, but also mixes the skin and flesh tissue in the living tissue of the kidney, affecting the accuracy of pathological diagnosis in the later stage

Method used

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  • Kidney puncture instrument for biopsy
  • Kidney puncture instrument for biopsy
  • Kidney puncture instrument for biopsy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment provides a kidney puncture instrument for biopsy, which includes two independent workpieces, a puncture needle 1 and a negative pressure collection tube 2; wherein, the puncture needle 1 is used as a puncture tool and is mainly used to load the negative pressure collection tube 2; The negative pressure collection tube 2 is detachably mounted on the puncture needle 1 and is mainly used for collecting pathological tissues. Since the puncture needle 1 is mainly used to carry the negative pressure collection tube 2 to puncture into the human body, the puncture needle 1 does not need to be made into a hollow tube. The puncture needle 1 of this embodiment is a solid cylindrical structure, especially the needle tip of the puncture needle 1 is a solid slope , The size of the inclined surface is designed according to the actual puncture resistance and other factors, and there is no problem of carrying and mixing non-patient tissues on the rear tube blade face.

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Embodiment 2

[0050] Further improvement on the basis of Example 1, the internal channel of the negative pressure collection pipe 2 is divided into a negative pressure pipe section 24 and a collection pipe section 25 from top to bottom; The air-permeable membrane 27, the spacer 26 and the air-permeable membrane 27 realize the gas interconnection between the negative pressure pipe section 24 and the collection pipe section 25, and are used to prevent the sealing plug 22 from continuing to move upward, and the sealing plug 22 moves upward under the action of negative pressure during use , is blocked by the spacer 26 and the air-permeable membrane 27, and stops moving upwards at the spacer 26 and the air-permeable film 27. At this time, between the sealing plug 22 and the bottom end surface of the negative pressure collection tube 2, it is used as the collection chamber of the case tissue .

Embodiment 3

[0052] Further improvement on the basis of Embodiment 1 or 2, the preferred structure of the installation of the top and bottom of the negative pressure collection tube 2 and the puncture needle 1 is given:

[0053] 1. The top installation structure of the negative pressure collection pipe 2:

[0054] The tail end of the puncture needle 1 is provided with an end cap 12, the axial section of the end cap 12 is a T-shaped structure, the end cap 12 is arranged on the same axis as the puncture needle 1, and the bottom surface of the end cap 12 is aligned with the puncture needle 1. The end face of the tail end is integrally connected, and the top end of the end cover 12 is detachably connected with the bottom end of the operating handle 3 by screws. The outer diameter of the lower end of the end cover 12 is greater than the outer diameter of the puncture needle 1, and is equal to the overall outer diameter of the puncture needle 1 and the negative pressure collection tube 2; The c...

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Abstract

The invention discloses a renal puncture instrument for biopsy, comprising a puncture needle and a negative pressure collection tube; the needle tip of the puncture needle is a solid bevel; the side wall of the puncture needle is provided with an axially extending installation groove, and the negative pressure collects The pipe is detachable and fixed in the installation groove; the bottom side wall of the negative pressure collection pipe is provided with a collection inlet, and the inner channel of the bottom has a conical structure and is provided with a conical sealing plug. The outer wall of the conical sealing plug and the negative pressure collection inlet are located. The inner wall of the pipe is interference fit and sleeved; the bottom end of the booster rod is fixed at the bottom of the installation groove, and the top end penetrates the bottom end face of the negative pressure collecting pipe and then extends into the negative pressure collecting pipe. The invention is a novel negative pressure biopsy puncture tool, which can avoid the subcutaneous tissue being cut by the cutting edge of the back of the needle tip to be mixed with the living kidney group.

Description

technical field [0001] The invention relates to a surgical instrument, in particular to a kidney puncture instrument for biopsy. Background technique [0002] Renal puncture in the prior art is kidney biopsy, also known as renal biopsy. Due to the wide variety of kidney diseases and the complex etiology and pathogenesis, the clinical manifestations of many kidney diseases are not completely consistent with the histological changes of the kidneys, and the histopathological changes in different development stages of kidney diseases are also inconsistent. At present, the results of renal pathological examination have become the gold standard for the diagnosis of renal diseases. The clinical diagnosis can be corrected in more than one-third of patients by renal biopsy, which is especially important in the diagnosis of transplanted kidney disease. [0003] The traditional negative pressure suction puncture needle adopts a hollow puncture needle, the tip of the puncture needle i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B10/02A61B17/34
CPCA61B10/0266A61B17/3417
Inventor 赵友光李莹李沙丹杨航梁平
Owner 中国人民解放军西部战区总医院