CN104523292A - Fingerstall type ultrasonic probe - Google Patents

Abstract

The invention relates to the field of medical equipment, and is a finger cot-type ultrasonic probe for puncture operation, including a housing, a connecting device and a transducer. The housing includes a sleeve-shaped finger cot and a casing, and the casing is fixed On the outer circle side of the finger cot; there is a cavity in the casing, and a hole is provided at the bottom. The transducer is installed inside the casing, and the acoustic window of the transducer is installed correspondingly to the hole in the casing. After one end of the connecting device is connected with the finger cuff, it can move along the circumferential direction of the finger cuff, and the other end of the connecting device is fixedly connected with the casing. The invention is small in size and can be put on the back of the finger so that the doctor can perform ultrasonic detection and puncture operation at the same time, which simplifies the operation steps; during operation, the finger-cuff ultrasonic probe only needs a small movement to achieve the effect, improving the success rate of puncture. The finger-sleeve ultrasonic probe adds a connecting device between the casing and the finger-sleeve, which can make the casing move around the finger-sleeve in a circumferential direction, which can increase the detection area of the probe and solve the problem of limited detection field of view of the small probe.

Description

Finger Cot Ultrasound Probe

technical field

The invention belongs to the field of medical equipment, and in particular relates to a finger cuff type ultrasonic probe suitable for blood vessel puncture.

Background technique

Vascular puncture technology is one of the most commonly used invasive operations in hospitals. Related vascular puncture can provide patients with infusion, blood transfusion, drug therapy, nutritional therapy, plasma exchange, dialysis, blood gas analysis, continuous arterial monitoring, heart, brain and major organs. An important channel for interventional treatment or other rescue measures. At present, the vast majority of puncture operations rely on clinicians to perform anatomical positioning of the body surface, clinical experience and hand feeling. The success rate of puncture is low, error-prone, and various puncture complications are prone to occur, threatening medical safety and bringing pain to patients. Even life-threatening. In recent years, ultrasound technology has been gradually applied in clinical blood vessel puncture. Ultrasound technology can display the blood vessel to be punctured and surrounding structures, which improves the success rate of puncture and reduces the complications of blood vessel puncture. The puncture operation using an ultrasonic probe is different from the detection operation using only an ultrasonic probe. Doctors usually need to complete two continuous actions of observation and puncture. Small size and convenience have become the main requirements for ultrasonic probes in the field of vascular puncture.

The Chinese patent publication number is "CN 01268951A", the application number is "200810044338.1", and the invention titled "an ultrasound-guided intraoperative and anesthesia monitoring device" discloses an ultrasound-guided device, including an ultrasound probe and a hand-held part, an ultrasound probe Located at the front end of the hand-held part, the display screen of the ultrasonic device is arranged at the rear end of the hand-held part. This invention has a miniaturized design, which is helpful for doctors to operate and observe in the same direction with hands and eyes in actual use. The Chinese patent publication number is "CN101742968A", the application number is "200880018085.9", and the title is "Wireless Ultrasonic Probe User Interface", which also discloses an invention patent of a small ultrasonic probe, including a probe housing, which is enclosed in a transducer array , a probe controller and a transceiver, the transceiver wirelessly receives control signals from the host system and sends image signals to the host system, the invention achieves a light weight and small volume probe by simplifying circuit components.

Both of the above two inventions achieve the purpose of miniaturization of the probe, but due to the limitation of the shape of the probe, the ultrasonic probe is still limited to the hand-held type. In clinical use, it is found that after the doctor holds the ultrasonic probe with one hand, the other hand cannot complete For the puncture operation, you must put down the probe to puncture immediately after the observation, and then hold the ultrasonic probe again to detect the puncture position. This operation is not only cumbersome, but also does not effectively reflect the role of the ultrasonic probe. The hand that only handles the puncture needle will be affected, resulting in puncture errors.

A small and convenient ultrasonic probe that can be performed synchronously with the puncture operation.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art, provide a finger cuff ultrasonic probe that can be used synchronously with puncture, and ensure that the detection field of view is relatively sufficient when the probe is reduced. The technical solution is as follows:

A finger cot type ultrasonic probe, comprising a housing and a transducer, the housing includes a sleeve-shaped finger cot and a casing, the casing is fixed on the outer circle side of the finger cot; there is a cavity in the casing, There is a hole at the bottom, the transducer is installed inside the casing, and the acoustic window of the transducer is installed correspondingly to the hole of the casing.

The outer side of the case fixing fingertip is connected in a common way in the mechanical field, such as through bolts and nuts, tenon connection or slideway connection, etc. After being fixed in this way, the case usually has no degree of freedom and cannot produce relative movement.

Preferably, the casing further includes a connecting device, one end of the connecting device is connected to the finger cuff and can move along the circumferential direction of the finger cuff, and the other end of the connecting device is fixedly connected to the casing. Due to the small size of the probe, the swing of the casing is required to obtain a larger observation field of view. For the hand-held ultrasonic probe, the doctor can complete the adjustment manually. The shell has a circumferential swing effect relative to the fingertip. The connecting device is also a commonly used connecting means in the mechanical field, such as slideways, rollers and the like.

A preferred connection means is that the outer circle of the sleeve is provided with a slideway, and the connecting device is a slider and a slider seat for fixing the slider; the slider is clamped in the slideway, and the slider seat is connected with the casing. In this manner, the casing has a degree of freedom relative to the circumference of the fingertip, and when the slider is cylindrical, another degree of freedom can be added. Since the casing does not require excessive swing during clinical application, the included angle between the two ends of the slideway and the central axis of the finger cuff can be controlled as a blocking device to control the swing.

Preferably, the central angles corresponding to the two ends of the slideway are in the range of 0°-60°. Within this range, the probe can meet a better detection field of view, and at the same time prevent the probe from sliding too far to affect the doctor's operation. The central angle refers to the central angle corresponding to the arc formed by the slideway in the cross-sectional direction of the fingertip on the edge of the fingertip.

Preferably another connection method, the connection device is a universal joint, and two universal joint forks are respectively fixed to the outer circle and the finger cot. When the connecting device is a universal joint, the movement of the casing is relatively flexible, and two degrees of freedom are naturally generated, and the universal joint can be fixed inside or outside the casing. Universal joints can be installed to control the circumferential movement of the casing, or stoppers symmetrically distributed relative to the casing can be arranged on both sides of the outer circle of the finger cuff, and the stoppers can be used as blocking devices to control the movement of the casing. The angle of the fingertip is between 0° and 60°. Within this range, the probe can meet a better detection field of view, and at the same time prevent the probe from sliding too far to affect the doctor's operation.

Preferably, the finger cot has a double-layer structure, and the inner layer is a protective sheath.

Preferably, a probe control circuit of the transducer, a transceiver of the control circuit, and a user interface located on the probe and coupled to the probe control circuit are also installed in the casing. After the wireless system is set inside the casing, the ultrasound probe is made more compact.

The finger cot type ultrasonic probe can have different models to suit different fingers. The length of the ultrasonic probe is in the range of 20-50 mm, and the width of the inner diameter is in the range of 20 mm-30 mm.

The transducer can be selected from a piezoelectric ultrasonic transducer, a detection ultrasonic transducer, and a magnetostrictive ultrasonic transducer, and the frequency of the transducer is within the range of 6-12 MHz.

The finger cot type ultrasonic probe of the present invention, the main body is a finger cot, the outer circle side of the finger cot is equipped with an organic shell, the transducer is placed inside the shell, and the acoustic window of the transducer can be touched after protruding from the hole on the shell body surface. During operation, the finger can be put into the fingertip, and the casing corresponds to the finger pulp of the finger. When ultrasonic inspection is required, only the finger put in the fingertip corresponds to the relevant part, and the casing at the fingertip is pressed. The invention is small in volume and is put on the back of the finger. The doctor can perform ultrasonic detection and puncture operation at the same time. It does not need to be removed before puncture or picked up again after puncture for inspection, so the operation steps are simplified, and the puncture results can be observed from time to time; operation At the same time, the finger-sleeve ultrasonic probe only needs a small movement to achieve the effect, without affecting the puncture finger, which improves the success rate of puncture. The finger cot type ultrasonic probe adds a connecting device between the casing and the finger cot to make the casing move around the finger cot in a circumferential direction, which can increase the detection area of the probe and solve the problem of limited detection field of view of the small probe.

The invention has the beneficial effects of small size, convenient use, can be performed synchronously with the puncture operation, and has a large detection area.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of finger cot of the present invention;

Fig. 3 is a structural schematic diagram inside the casing of the present invention;

Fig. 4 is the schematic diagram of another kind of structure of the present invention;

Fig. 5 is the schematic diagram inside another kind of structure casing of the present invention;

Among them, 1-finger cot 11-slide 12-block

2-Case 21-hole 3-Connection device

31-slider 32-slider seat 33-connecting shaft

4-transducer 41-acoustic window

detailed description

The best implementation mode of the present invention will be further described in detail according to the embodiments and accompanying drawings.

Example 1:

A finger cot type ultrasonic probe includes a shell, a transducer 4 and other accessories related to the transducer. The shell is composed of a finger cot 1 and a casing 2 . The fingertip is a cylinder with through holes inside. The fingertip 1 has a double-layer structure, the outer layer is made of a material with a certain hardness, and the inner layer is relatively soft. The casing 2 is located on the outside of the outer circle of the finger cot 1. When the finger is inserted into the finger cot 1, the casing will be on the fingertip. There is a cavity inside the casing 2, the top is not closed, and the bottom has a hole. The side wall of the casing 2 is connected with the finger cot by bolts. The transducer 4 and related accessories are installed inside the casing 2, wherein the acoustic window 41 of the transducer 4 corresponds to the hole 21 on the casing 2, and the acoustic window 41 can pass through the hole 21 to contact the body surface for feedback signals . The transducer can be published according to Science Press 2004.06.01, the author is Lin Shuyu's "Principle and Design of Ultrasonic Transducer" Chapter 2 Piezoelectric Ultrasonic Transducer, Chapter 3 Principles of Magnetostrictive Ultrasonic Transducer to manufacture. Transducers were manufactured with frequencies in the 6-12 MHz range.

Example 2:

As shown in Figures 1 to 3, it is a finger cuff type ultrasonic probe, the rest is the same as that of Embodiment 1, the housing also includes a connecting device 3, and the top of the housing 2 is closed. The connecting device 3 is a slider 31 and a slider seat 32 , the slider 31 is installed in the slider seat 32 , and the slider seat 32 is fixed on the top of the casing 2 . There are two slideways 11 distributed on both sides of the fingertip in the circumferential direction relative to the mirror surface of the casing 2. After the slider 31 on the connecting device 3 is engaged with the slideway 11, the connecting device 3 and the casing 2 can be formed around the fingertip. Circumferential movement. The angle formed between the two ends of the slideway 11 and the axial direction of the finger cuff is 15°, so the angle at which the casing 2 moves around the finger cuff 1 in the circumferential direction is 15°, which meets the needs of general testing.

Example 3:

A finger-sleeve ultrasonic probe as shown in FIG. 4 and FIG. 5 , the rest is the same as in Embodiment 1, and the object includes a connecting device 3 . The connecting device 3 is a universal joint, and two universal joint forks of the universal joint are respectively connected with the finger cot 1 and the casing 2 , wherein the connection with the casing 2 is completed by means of a connecting shaft 33 . Through the connection of the universal joint, the ultrasonic probe can complete the circumferential movement around the fingertip and the forward and backward movement. The two ends of the finger cuff 1 are smooth curved surfaces, and the intersection of the side of the casing 2 and the finger cuff 1 is relatively smooth, so that the degrees of freedom in two directions of the ultrasonic probe can not be hindered. There are two stoppers 12 on both sides of the upper circumferential direction of the fingertip 1 which are mirror images of the casing 2. The stoppers 12 make the angle of the casing around the fingertip within 45°.

Example 4:

A finger cot type ultrasonic probe, the rest are the same as in Embodiment 1, the probe control circuit of the transducer, the transceiver of the control circuit, and the user interface located on the probe and coupled to the probe control circuit are also installed inside the casing 2 . After the wireless system is set inside the casing, the ultrasound probe is made more compact. The length of the finger cot is 30mm, and the inner diameter of the inner wall is 20mm.

Example 5:

A kind of any finger cot-type ultrasonic probe as described in Embodiments 1 to 4. Before performing the puncture, the doctor first connects the finger cot-type ultrasonic probe to the ultrasonic equipment, connects it with the host computer, data receiving device and other systems, and then connects the finger cot-type ultrasonic probe to the ultrasonic device. The sleeve-type ultrasonic probe cover is set on the fingers of the left hand through finger cot 1, and gloves are worn to ensure aseptic operation. Rely on the transducer 4 inside the casing 2 to detect the blood vessel to be punctured and the surrounding structure. If the field of view cannot meet the required requirements, the connecting device 3 can be used to rotate the casing 2 to obtain a larger field of view. The left hand of the doctor with the ultrasound probe can still be used. For positioning, the right hand performs the puncture operation. After the puncture is completed, the probe in the left hand can check whether the puncture position is correct again, realizing the simultaneous operation of detection and puncture.

The preferred embodiments of the present invention have been specifically described above, but the present invention is not limited to the described embodiments, and those skilled in the art can also make various equivalents without violating the spirit of the present invention. Modifications or replacements, these equivalent modifications or replacements are all included within the scope defined by the claims of the present application.

Claims (8)

1. a fingertip type ultrasonic probe, comprising housing and transducer (4), is characterized in that, described housing comprises the fingertip (1) and casing (2) of pipe sleeve shape, casing ( 2) It is fixed on the outer circle side of the finger cot (1); there is a cavity in the casing (2), and a hole (21) is provided at the bottom, and the transducer (4) is installed inside the casing (2). The acoustic window (41) of (4) is correspondingly installed with the hole (21) of casing (2). 2. The finger cot-type ultrasonic probe according to claim 1, characterized in that, the housing also includes a connecting device (3), one end of the connecting device (3) is connected with the finger cot (1) along the finger cot (1) Circumferential movement, the other end of the connecting device (3) is fixedly connected with the casing (2). 3. The finger cot type ultrasonic probe according to claim 2, characterized in that, the outer circle of the finger cot (1) is provided with a slideway (11), and the connecting device (3) is a slide block (31) and a fixed The combination of the slider seat (32) of the slider (31); the slider (31) is clamped in the slideway (11), and the slider seat (32) is connected with the casing (2). 4. The finger-cot type ultrasonic probe according to claim 3, characterized in that, the central angle corresponding to the two ends of the slideway (11) is in the range of 0°-60°. 5 . The finger cot type ultrasonic probe according to claim 2 , characterized in that, the connecting device is a universal joint, and two universal joint forks are respectively fixed to the casing ( 2 ) and the finger cot ( 1 ). 6. The finger cot-type ultrasonic probe according to claim 3, characterized in that, symmetrically distributed barriers (12) are arranged on both sides of the outer circle of the finger cot, so that the casing (2) is wound around the finger cot (1 ) The critical angle of circumferential motion is in the range of 0° to 60°. 7. The finger cot type ultrasonic probe according to claim 1 or 2, characterized in that, the finger cot (1) has a double-layer structure, and the inner layer is a protective sheath. 8. The finger cot type ultrasonic probe according to claim 1 or 2, characterized in that, the probe control circuit of the transducer (4), the transceiver of the control circuit and the probe on the probe are also installed in the casing (2). and coupled to a user interface of the probe control circuit.