CN211583109U

CN211583109U - Probe

Info

Publication number: CN211583109U
Application number: CN202020007626.6U
Authority: CN
Inventors: 李平; 袁熙; 鄢建勤; 蒋小娥; 赵延华; 裴琛琳; 张卫社
Original assignee: Xiangya Hospital of Central South University
Current assignee: Xiangya Hospital of Central South University
Priority date: 2020-01-03
Filing date: 2020-01-03
Publication date: 2020-09-29
Anticipated expiration: 2030-01-03

Abstract

The utility model provides a probe, include: a first optical fiber forming an incident path (11), a plurality of reflection detection optical fibers (23), a first direction control line (25), and a second direction control line (26); a first optical fibre is located in the middle of the probe (20) and a plurality of reflection detection optical fibres (23) are arranged around the first optical fibre. The probe of the utility model adopts the optical fiber as the element for transmitting signals. Aiming at the weakness of the reflected signals, a plurality of reflection detection optical fibers are arranged, so that the signal receiving effect is better. The foreign substance sensation is smaller because the diameter is smaller than that of the optical detection method of the prior art.

Description

Probe

Technical Field

The utility model relates to a human articles for daily use field especially relates to a probe.

Background

Postpartum hemorrhage is one of the important causes of death of the puerpera, and life danger can be brought to the puerpera if the puerpera finds and properly handles the postpartum hemorrhage in time. Once a puerpera has postpartum hemorrhage and a person with severe shock and long duration can still have serious secondary anterior pituitary hypofunction (Sheehan syndrome) sequelae even if the parturient is rescued, so that great attention should be paid to the prevention and treatment. In clinical practice, when postpartum uterine contraction is hypodynamia and hemorrhage occurs, gynecologists often adopt various methods to promote the autonomous uterine contraction formation of patients and reduce hemorrhage. For example by intravenous injection, intrauterine injection, anal tamponade; massaging via abdominal wall uterus or via abdominal wall vagina and both hands uterus; bundling uterus; uterine artery ligation; the uterine cavity is filled with gauze. The premise of implementing the above measures is to detect and evaluate the bleeding condition of the puerpera in time in advance.

Most of the existing devices for postpartum hemorrhage detection in the market are not perfect enough, and medical care personnel and puerpera can not be reminded of danger in time. For example, the prior art usually lays a nursing pad under the hip of a parturient to visually observe and estimate the bleeding amount, so that the operation is troublesome, the bleeding position and the bleeding condition of the patient cannot be known in time, and the targeted hemostasis cannot be realized. And whether further bleeding is possible after stopping the bleeding for a certain period of time can only be detected when the blood flows out of the body, easily delaying the optimal treatment time.

SUMMERY OF THE UTILITY MODEL

In order to realize a probe, the technical scheme provided by the application is as follows:

a probe includes a first optical fiber forming an incident path 11, a plurality of reflection detection optical fibers 23, a first direction control line 25, a second direction control line 26; a first optical fibre is located in the middle of the probe 20 and a plurality of reflection detection fibres 23 are arranged around the first optical fibre.

According to an aspect of the present invention, the elastic plastic material is filled in the space between the first optical fiber and the plurality of reflection detection optical fibers 23.

According to one aspect of the present invention, the outer sides of the plurality of reflection detection fibers 23 are wrapped with a first plastic fiber wrapping; the first direction control wire 25 and the second direction control wire 26 are coated with a second plastic fiber coating layer on the outer side.

According to one aspect of the present invention, the first direction control wire 25 and the second direction control wire 26 are disposed between the first plastic fiber cladding and the second plastic fiber cladding.

According to an aspect of the present invention, an elastic plastic material is filled between the first plastic fiber covering layer and the second plastic fiber covering layer.

According to one aspect of the present invention, a disposable sheath 27 is provided around the outside of the probe 20.

According to one aspect of the invention, the outer surface of the disposable sheath is further provided with a thermoplastic polyurethane coating.

According to one aspect of the present invention, one side of the tip 22 of the probe 20 is provided with an optical lens 24.

According to an aspect of the invention, the probe diameter is below 5 mm.

Compared with the prior art, the utility model discloses following beneficial effect has: the probe of the utility model adopts the optical fiber as the element for transmitting signals. Aiming at the weakness of the reflected signals, a plurality of reflection detection optical fibers are arranged, so that the signal receiving effect is better. The foreign substance sensation is smaller because the diameter is smaller than that of the optical detection method of the prior art.

Drawings

Fig. 1 is a signal transmission process of the present invention;

fig. 2 shows the signal receiving process of the present invention;

FIG. 3 is a block diagram of the bleeding detecting system of the present invention;

fig. 4 is a schematic cross-sectional view of the tip of a probe of the present invention;

fig. 5 is a side view of the structure of the probe tip of the present invention;

fig. 6 is a schematic structural view of the disposable sheath at the end of the probe of the present invention.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and the detailed description.

Adopt the utility model discloses a probe carries out hemorrhage to the disease and detects time measuring, at first pours into the fluorescent agent into through intravenous route. The fluorescent agent is distributed throughout the body via the blood circulation system within 3-5 minutes. The typical fluorescent agent is neoindocyanine green, and the injection dosage is 0.1-10 mg/Kg. The novel indocyanine green is a low-toxicity dye, is generally removed from blood by 97 percent after normal human intravenous injection for 20 minutes, does not participate in-vivo chemical reaction, has no enterohepatic circulation, and is widely applied to various medical experiments. Those skilled in the art will appreciate that other similar fluorescers may alternatively be used in the present invention.

Referring to fig. 1 and 2, the detection principle of the probe of the present invention is schematically illustrated, when bleeding occurs, blood 5 overflows from the circulatory system and flows into a body cavity 6, such as a uterine cavity, a vagina, an abdominal cavity, etc.

Since fluorescent agents have a response to a specific wavelength. The fluorescent agent distributed throughout the body via the blood circulation system can be used as a bleeding mark to be detected by the bleeding detection system of the utility model. Specifically, as shown in figures 1 and 2, the probe 20 is inserted into the vagina 2 in alignment with the uterine cavity tissue or vaginal wall 3. Due to the small thickness of the uterine cavity tissue or vaginal wall 3, typically 2-4mm, the light beam can easily penetrate to impinge on the blood 5. The probe 20 is an optical waveguide having a plurality of paths, such as optical fibers. The probe 20 includes at least one incident path 11 and at least one reflected path 14. The incident beam 7 is transmitted to one end of the probe 20 via the incident path 11 to generate an incident signal 37 having a specific beam width to be irradiated onto the blood 5. Since the blood 5 contains a fluorescent agent, it generates a reflected signal 38 that is captured by the probe 20 and transmitted to the reflected path 14 to generate the reflected beam 8.

As shown in fig. 3, the bleeding detection system using the probe of the present invention includes a signal source 10, an optical fiber coupler 12, a probe 20, a signal receiving unit 18, and a signal processing device 30.

One end of the probe 20 is connected with the optical fiber coupler 12, one port of the optical fiber coupler 12 is connected with the signal source 10, the other end of the optical fiber coupler 12 is connected with the signal receiving unit 18 through the reflection path 14, and the other end of the signal receiving unit 18 is connected with the signal processing device 30.

The signal receiving unit 18 includes a diffraction grating 13, a lens 17, and an optical detector 16 connected in this order.

Because ultraviolet rays and visible light are not easy to penetrate human tissues, and near infrared rays can penetrate human tissues with the thickness of more than 10 mm. Therefore, the signal source 10 of the present invention employs a near-infrared diode. The emitting power of the near-infrared diode is 5-50mW, and the working wavelength is 630-645 nm. A signal source 10 couples the incident beam 7 to an incident path 11. A fiber coupler 12 couples the incident beam 7 to the probe 20. The probe 20 includes at least one incident path 11 and at least one reflected path 14. The diffraction grating 13 is used to filter out clutter and select an appropriate wavelength receive window. The reflected beam is filtered by the diffraction grating 13, clutter of the reflected signal of the fluorescent agent with a specific wavelength is filtered, and the reflected beam is generated and sent to the optical detector 16 after being converged by the lens 17. The optical detector 16 is a CCD, detects the spectrum of the reflected beam, transmits the detected spectrum to the signal processing device 30, and outputs a detection result.

The optical detector 16 has high sensitivity, is capable of detecting light in the reflected beam 8 and converting it into fluorescence image signals, and then outputs these fluorescence image signals to the signal processing device 30 at a predetermined frame rate.

Fig. 4 shows a schematic cross-sectional view of the tip 22 of the probe 20. The probe 20 includes a first optical fiber forming the incident path 11, a plurality of reflection detection optical fibers 23, a first direction control line 25, and a second direction control line 26. A first optical fibre is located in the middle of the probe 20 and a plurality of reflection detection fibres 23 are arranged around the first optical fibre. The arrangement of the plurality of reflection detection optical fibers can improve the receiving performance of weak reflection signals. The gaps between the first optical fiber and the plurality of reflection detection optical fibers 23 are filled with an elastic plastic material. The outer sides of the plurality of reflection detection optical fibers 23 are coated with a first plastic fiber cladding. The first direction control wire 25 and the second direction control wire 26 are coated with a second plastic fiber coating layer on the outer side. The first direction control line 25 and the second direction control line 26 are disposed between the first plastic fiber cladding and the second plastic fiber cladding. Elastic plastic material is filled between the first plastic fiber cladding and the second plastic fiber cladding. The first and second plastic fiber coverings make the probe 20 pliable in texture, reducing patient discomfort and facilitating advancement.

In actual operation, the probe surface is inevitably contaminated with body fluid and blood of the subject. Many pathogens, such as various hepatitis viruses, HIV, helicobacter pylori, staphylococci, etc., can be transmitted through body fluids and blood. Sterilization and cleaning protocols that are not strictly performed will result in cross-contamination. In order to solve the above problem, a disposable sheath 27 may be provided outside the probe 20 as shown in fig. 6 to reduce the time for sterilization and reduce the requirement for medical staff. The disposable sheath is made of biocompatible materials, such as natural latex, medical silica gel, thermoplastic polyurethane and the like. The disposable sheath is used in conjunction with the probe to reduce cross-contamination that can result when the probe is reused.

Preferably, the outer surface of the disposable sheath is also provided with a Thermoplastic Polyurethane (TPU) coating to make the surface smoother and reduce the foreign body sensation.

A plurality of reflection detection fibers 23 are coupled to the reflection path 14 through the fiber coupler 12. Pulling the first direction control line 25 and the second direction control line 26 can control the probe 20 to dynamically adjust the advancing direction during the travel.

As shown in fig. 5, the side of the end 22 of the probe 20 is further provided with an optical lens 24, and the optical lens 24 can make the beam irradiation of the incident path 11 more uniform and improve the signal intensity captured by the reflection detection fiber 23.

Because the utility model discloses a probe adopts optic fibre, compares the check out test set diameter among the prior art littleer, typically, the utility model discloses a probe diameter is below 5 mm.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. Parts of the invention not described in detail belong to the common general knowledge of a person skilled in the art.

The above examples mainly illustrate preferred embodiments of the present invention. Although only a few embodiments of the present invention have been described, those skilled in the art will appreciate that the present invention may be embodied in many other forms without departing from the spirit or scope thereof. Accordingly, the present examples and embodiments are to be considered as illustrative and not restrictive, and various modifications and substitutions may be made thereto without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A probe, comprising: a first optical fiber forming an incident path (11), a plurality of reflection detection optical fibers (23), a first direction control line (25), and a second direction control line (26); a first optical fibre is located in the middle of the probe (20) and a plurality of reflection detection optical fibres (23) are arranged around the first optical fibre.

2. The probe of claim 1, wherein: the gaps between the first optical fiber and the plurality of reflection detection optical fibers (23) are filled with an elastic plastic material.

3. The probe of claim 1, wherein: the outer sides of the plurality of reflection detection optical fibers (23) are wrapped with first plastic fiber claddings; the outer sides of the first direction control line (25) and the second direction control line (26) are coated with a second plastic fiber coating.

4. The probe of claim 1, wherein: a first direction control line (25) and a second direction control line (26) are arranged between the first plastic fiber cladding and the second plastic fiber cladding.

5. The probe of claim 4, wherein: elastic plastic material is filled between the first plastic fiber cladding and the second plastic fiber cladding.

6. The probe of claim 1, wherein: a disposable sheath (27) is sleeved on the outer side of the probe (20).

7. The probe of claim 6, wherein: the outer surface of the disposable sheath is also provided with a thermoplastic polyurethane coating.

8. The probe of claim 1, wherein: an optical lens (24) is provided on one side of the tip (22) of the probe (20).

9. The probe of claim 1, wherein: the diameter of the probe is less than 5 mm.