Instrument for measuring inner diameter of airway

Abstract

The invention provides an airway inner diameter measuring instrument. The airway inner diameter measuring instrument comprises a holding part, an actuating part, a catheter main body, an expanding part and a measuring part, the holding part is used for being held by an operator and is connected with the catheter main body; the actuating part is used for controlling the measuring part to extend out of / retreat from the catheter main body, and the actuating part can move relative to the holding part; the catheter body is used for constructing a transmission channel and a fluid passage, and the holding part and the actuating part are arranged at the near end of the catheter body; the expansion part is used for performing expansion treatment on a narrow airway part, and the measuring part is used for measuring the airway size; the expansion part and the measuring part are arranged at the far end of the catheter main body, and the measuring part is also provided with a spray hole for dyeing an identifier; by arranging the annular tail end and the spraying holes in the annular tail end, the airway is accurately measured and marked, the balloon is arranged, size evaluation and treatment integration can be achieved, operation is easy and convenient, and treatment time is saved.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to an airway inner diameter measuring instrument. Background Art

[0002] Airway size measurement plays an important role in the diagnosis and treatment of airway diseases. Patients usually undergo CT and other imaging methods to measure airway size before receiving treatment. However, since CT and other imaging methods are easily affected by the patient's airway environment (such as sputum and necrotic material), it is difficult to ensure the accuracy of airway size measurement. The patient's treatment process needs to be further combined with bronchoscopy to evaluate airway size for more accurate treatment. For example, for patients with airway stenosis, clinicians need to select a stenosis expansion balloon or stent of appropriate size according to the size of the stenosis for treatment to avoid inappropriate size of expansion balloon or stent, resulting in insufficient expansion and poor treatment effect, or excessive expansion of the stenosis or even tearing, causing airway perforation or stimulating scar hyperplasia and other complications.

[0003] In the prior art, there is a lack of effective measurement tools for airway size. Although airway size can be evaluated clinically by filling a compliant balloon with pressure, observing the balloon expansion pressure and the corresponding balloon size, the compliance balloon has a large deformation and the balloon size is easily squeezed by the airway, which makes it difficult for the filling balloon pressure to accurately reflect the airway size. Therefore, clinicians mostly observe airway images under endoscopy; but under endoscopy, only a certain section of the airway can be roughly selected for evaluation, and then the airway size can be roughly evaluated based on experience. It is impossible to accurately measure the size of a specific position of the airway, and the results obtained are not accurate enough. Then, according to the evaluated airway size, the corresponding expansion balloon is prepared for surgery. Since the location of the affected area for observation and evaluation is not marked, there may be a deviation between the measurement location and the actual surgical location, and the accuracy of the expansion surgery performed thereafter cannot be guaranteed. On the other hand, during clinical treatment, different instruments are used for airway measurement and expansion to achieve the measurement and expansion treatment purposes respectively, and the surgical efficiency is not high. Summary of the invention

[0004] In view of this, in order to solve the above-mentioned technical problems, the present invention proposes an airway inner diameter measuring device, which can realize the functions of accurately measuring the size of the airway lumen, marking the measurement site, and accurately identifying the segment to carry out dilation treatment; specifically, the airway inner diameter measuring device of the present invention can measure the size of a specific position and can realize segment marking, and based on the measurement results, adapt a specific size of dilation balloon to carry out dilation treatment, so as to maintain the patency of the patient's airway.

[0005] Furthermore, the present invention provides an airway inner diameter measuring instrument, which can accurately measure and mark the airway by setting a ring-shaped end and a spray hole thereon, and is provided with a balloon, so as to realize the integration of size assessment and treatment, and is easy to operate, saves treatment time and improves surgical efficiency.

[0006] The present invention provides an airway inner diameter measuring device, comprising a holding portion, an actuating portion, a catheter body, an expansion portion and a measuring component;

[0007] The holding portion is used for the operator to hold and is connected to the catheter body;

[0008] The actuating portion is used to control the measuring component to extend out of / retract into the catheter body, and the actuating portion can move relative to the holding portion;

[0009] The catheter body is used to construct a transmission channel and a fluid passage, the holding portion and the actuating portion are arranged at the proximal end of the catheter body; the expansion portion is used to perform expansion treatment on airway stenosis, and the measuring component is used to measure the airway size; the expansion portion and the measuring component are arranged at the distal end of the catheter body;

[0010] The characteristic is that the measuring component is also provided with a spray hole for dyeing marking.

[0011] Optionally, one end of the measuring component is fixedly connected to the distal end of the catheter body so that the ring formed by the measuring component after extending from the catheter body is parallel or approximately parallel to the cross-section of the airway to be measured, so as to improve the accuracy of the measurement result.

[0012] Optionally, the expansion portion includes at least two balloons having different outer diameters after expansion.

[0013] Optionally, the actuating portion is transmission-connected to the measuring component, and the actuating portion can perform linear sliding, spiral motion or rotational motion relative to the holding portion to drive the measuring component to extend out of / retract into the catheter body.

[0014] Optionally, at least one of the actuating portion and the holding portion is provided with a scale for marking the distance and / or angle of relative movement of the actuating portion compared to the holding portion, so as to ultimately characterize the airway inner diameter measurement result.

[0015] Optionally, the expansion portion is disposed at the distal end of the catheter body and includes at least a first expansion balloon and a second expansion balloon of two different sizes.

[0016] Optionally, the measuring component is hollow, with an injection port provided at its proximal end, the distal end section head is closed, and the dyeing nozzles are evenly arranged on the outer edge side of the pipe section closer to the distal end section head.

[0017] Optionally, at least the tube section portion close to the head of the distal segment of the measuring component is made of a shape memory alloy; or, at least the tube section portion close to the head of the distal segment of the measuring component is provided with an inner core with a shape memory function; so that when the tube section close to the head of the distal segment of the measuring component extends from the catheter body, as the extended length of the measuring component gradually increases, the measuring component is approximately bent into a ring shape to fit the inner wall of the airway.

[0018] Optionally, the proximal end portion of the measuring component is connected to the actuating portion, and the actuating portion can drive the measuring component to extend / retract relative to the catheter body.

[0019] Optionally, the catheter body includes at least one multi-way connector, which leads out at least a first pipeline connected to the first expansion balloon in the catheter body, and / or a second pipeline connected to the second expansion balloon, and / or a staining tube connected to the measuring component.

[0020] Optionally, the actuating part is a push-pull rod; or, the actuating part is a gear-rack transmission mechanism and its deformation; or, the actuating part is a worm-worm gear transmission mechanism and its deformation; or, a screw-threaded hole mechanism and its deformation.

[0021] Optionally, the holding portion is a handle or a clamping portion of a robotic arm.

[0022] Optionally, a first pipeline, a second pipeline and a dyeing tube are provided in the catheter body, and the first pipeline and / or the second pipeline are connected to the balloon expansion air pump through a multi-way connector, the proximal end of the dyeing tube is connected to the push-pull rod, and the distal end is connected to the measuring component, and the dyeing tube and the measuring component are pushed to move by the push-pull rod.

[0023] Optionally, the dye tube is provided with a dye injection port near the proximal section, and dye is injected into the dye injection port so that the dye is sprayed out from the dye spray hole at the distal end of the measuring component to mark the airway section.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] 1. The measuring part of the airway inner diameter measuring instrument of the present invention is a ring-shaped end with a variable inner diameter, which can accurately evaluate the airway size of the affected part, and dye spray holes are distributed on the ring-shaped end. After the airway size of the affected part is evaluated, dye can be sprayed onto the airway wall to mark the affected part. Such a setting can accurately evaluate the size and mark the affected part, thereby achieving precise measurement and treatment.

[0026] 2. The airway inner diameter measuring instrument of the present invention is provided with an expansion part, which includes at least two balloons with different outer diameters after expansion. After obtaining the airway measurement size data, the corresponding balloons can be directly filled to achieve expansion treatment of the affected area. With this arrangement, airway size measurement and treatment can be integrated into one, saving treatment time and improving surgical efficiency.

[0027] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0030] Figure 1 FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

[0031] Figure 2 Shown Figure 1 A partial enlarged view of the distal end of the embodiment.

[0032] Figure 3 Shown Figure 1 A partial enlarged view of the proximal end of the embodiment.

[0033] Figure 4 Shown Figure 1 A partially enlarged cross-sectional view of a multi-pass part of an embodiment.

[0034] Figure 5 Shown is a partial cross-sectional view of an inner core in yet another embodiment of the present invention.

[0035] Figure 6 FIG. 2 is a schematic diagram of the three-dimensional structure of an actuating portion in another embodiment of the present invention.

[0036] Figure 7 FIG. 4 is a schematic diagram of the three-dimensional structure of an actuating portion in another embodiment of the present invention.

[0037] Figure 8 Shown is a schematic diagram of the three-dimensional structure of a holding portion in another embodiment of the present invention.

[0038] Figure numerals: holding part 11, actuating part 12, catheter body 13, expansion part 14, measuring component 15, multi-way 16, first pipeline 161, second pipeline 162, dyeing tube 163, scale 17, distal segment head 151, injection port 152, spray hole 153, inner core 154, screw-threaded hole mechanism 121, worm-worm gear transmission mechanism 122, holding robot arm 111. DETAILED DESCRIPTION

[0039] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and / or methods consistent with some aspects of the present invention as detailed in the appended claims.

[0040] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Unless otherwise defined, the technical terms or scientific terms used in the present invention should have the usual meaning understood by people with ordinary skills in the field to which the present invention belongs. The words "including" or "comprising" and the like used in the specification and claims of the present invention mean that the elements or objects appearing before "including" or "comprising" include the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. Words such as "connected" or "connected" and the like are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0041] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0042] In the present invention, the distal end refers to the end of the medical device that is away from the operator during normal use, and the proximal end is usually the end that the operator uses to hold during operation, that is, the end close to the operator. The proximal end and the distal end are relative terms used to describe relative positions and do not refer to a specific part.

[0043] like Figure 1 to Figure 2As shown, this embodiment provides an airway inner diameter measuring instrument, including a holding portion 11, an actuating portion 12, a catheter body 13, an expansion portion 14 and a measuring component 15. The holding portion 11 is used for the operator to hold, and the holding portion 11 is connected to the catheter body 13; the actuating portion 12 is used to control the measuring component 15 to extend / retract the catheter body 13, and the actuating portion 12 can move relative to the holding portion 11; the catheter body 13 is used to construct a transmission channel and a fluid passage, and the holding portion 11 and the actuating portion 12 are arranged at the proximal end of the catheter body 13; the expansion portion 14 is used to perform expansion treatment on the airway stenosis, and the measuring component 15 is used to measure the airway size; the expansion portion 14 and the measuring component 15 are arranged at the distal end of the catheter body 13; the measuring component 15 is hollow, and an injection port 152 is arranged at the proximal end, the distal segment head 151 is closed, and a dye spray hole 153 is arranged on the outer edge side of the tube segment closer to the distal segment head 151. The actuating portion 12 is transmission-connected to the measuring component 15 , and the actuating portion 12 can move linearly, spirally, or rotationally relative to the holding portion 11 to drive the measuring component 15 to extend out of / retract into the catheter body 13 .

[0044] In such Figure 1 In the illustrated embodiment, the gripping portion 11 has a handle finger ring, and the actuating portion 12 is an actuating finger ring located at the proximal end of the catheter body 13, which allows the holder to insert the thumb into the actuating finger ring, and the index finger and middle finger (or index finger and ring finger) are respectively inserted into the finger rings located on both sides of the handle, and the three fingers are used to hold the airway inner diameter measuring instrument. The actuating portion 12 is transmission-connected with the measuring component 15, and by pushing the actuating finger ring, the distal segment head 151 of the measuring component 15 extends far away relative to the catheter body 13, and gradually increases as the length of the measuring component 15 is extended. The distal segment of the measuring component 15 is approximately bent into a ring shape, and the ring radius increases as the length of the measuring component 15 is extended, until it fits the inner wall of the airway. The operator's push feels obvious resistance, which can be regarded as the measuring component 15 fitting the airway wall.

[0045] At least one of the actuating portion 12 and the holding portion 11 is provided with a scale 17 for marking one or more values ​​of the distance and angle of the relative movement of the actuating portion 12 compared to the holding portion 11, so as to ultimately characterize the airway inner diameter measurement result. Figure 3 The proximal end of the actuator 12 has a scale 17, and the display of the scale 17 changes as the measuring component 15 is extended or withdrawn. The inner diameter of the airway can be directly known or indirectly calculated through the scale 17 to prepare for the treatment of airway stenosis. In some embodiments, the measuring component 15 can also be provided with a sensor, such as a laser radar, to obtain airway diameter parameters and display them digitally on an electronic screen.

[0046] like Figure 1 to Figure 2As shown, the measuring component 15 is hollow, and an injection port 152 is provided at the proximal end, the distal segment head 151 is closed, and a dyeing spray hole 153 is provided on the outer edge side of the tube segment closer to the distal segment head 151. The catheter body 13 includes a multi-way 16, and the multi-way 16 and the measuring component 15 are connected to form a dyeing tube 163. In order to accurately treat the airway stenosis, the airway at the measurement site is marked through the dyeing tube 163, and a dye is injected into the dyeing tube 163. The dye flows through the dyeing tube 163 and is sprayed from the spray hole 153 at the terminal end to the airway wall to mark the affected area. Preferably, the dye can be selected from dyes such as iodine or methyl blue, so that the dyed part can be observed under the cavity endoscope. The measuring component 15 is retracted by controlling the actuating ring to retract the terminal end into the catheter body 13.

[0047] Combination Figure 4 , the multi-channel 16 is connected to the first expansion balloon to form a first pipeline 161, and is connected to the second expansion balloon to form a second pipeline 162. The balloon size suitable for treatment is determined according to the obtained inner diameter value, and then the holding part 11 is moved to make the catheter body 13 as a whole go deep or withdraw to drive the selected balloon to the marked position, and fluid is injected into the pipeline connected to the selected balloon to fill the balloon. After the balloon is inflated, the affected part can be expanded for treatment. The number and size of the balloon can be set according to actual needs. The selectivity of the balloon makes the airway inner diameter measurement instrument integrate measurement and treatment, which is highly targeted at treating different affected parts and greatly improves the efficiency of the operation.

[0048] Preferably, the expansion part 14 includes at least two balloons with different outer diameters after expansion. The operator can choose to fill one or more balloons of corresponding sizes to perform expansion treatment on the affected area according to the measured inner diameter value of the cavity. Specifically, the catheter body 13 is provided with a first pipeline 161, a second pipeline 162 and a dyeing tube 163. The first pipeline 161 and the second pipeline 162 are connected to the balloon expansion air pump through a joint, or the first pipeline 161 or the second pipeline 162 is connected to the balloon expansion air pump through a joint.

[0049] Preferably, the measuring component 15 is made of shape memory alloy at least at the portion close to the distal segment head 151 and closer to the pipe segment; Figure 5 As shown, at least the tube section near the distal section head 151 of the measuring component 15 is provided with an inner core 154 having a shape memory function, so that when the tube section near the distal section head 151 of the measuring component 15 is extended from the catheter body 13, as the extended length of the measuring component 15 gradually increases, the measuring component 15 is approximately bent into a ring shape to fit the inner wall of the airway. The tube section near the distal section head 151 can also be made of high elastic wire, which can restore to its original shape after being stressed, and has high toughness and is not easy to break.

[0050] In some embodiments, the annular end includes at least three spray holes 153, and the spray holes 153 are evenly arranged on the annular end. The spray holes 153 can be set in size, quantity and position as needed, and the cross section of an airway can be accurately marked according to the positions of the three spray holes 153, which is convenient for subsequent treatment.

[0051] In some embodiments, during measurement, the tube section portion near the distal section head 151 is arranged perpendicularly to the proximal end of the catheter body 12. Since the proximal end of the catheter body 12 mainly serves to extend axially toward the airway, and the tube section portion near the distal section head 151 is used to measure the inner diameter of the airway and the radial extension of the airway, therefore, the tube section portion near the distal section head 151 is arranged perpendicularly to the catheter body 12, which is beneficial to improving the accuracy of the inner diameter measurement.

[0052] like Figure 6 As shown, in some other embodiments, the actuator 12 is a screw-threaded hole mechanism 121 and its deformation. When the screw rotates, the threads on it interact with the threads in the threaded hole, and this interaction produces the transmission of motion and force. The rotational motion of the screw is converted into linear motion in the axial direction through the spiral shape of the thread, so that the measuring component 15 connected thereto is screwed in, and the inner diameter of the airway can be measured.

[0053] like Figure 7 As shown, in some embodiments, the actuator 12 is a gear-rack transmission mechanism 122 and its deformation. When the gear rotates, its teeth will engage with the tooth grooves of the rack in turn, pushing the rack to move linearly, thereby pushing the measuring component 15 connected thereto to perform airway endoscopy measurement.

[0054] In other embodiments, the actuating portion 12 may also be a worm-worm gear transmission mechanism and its deformations.

[0055] like Figure 8 As shown, in some embodiments, the gripping portion 11 is a mechanical arm gripping portion, which is connected to the catheter body 13. Such a configuration can save manual gripping and improve the stability of the operation.

[0056] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art not disclosed by the present invention. The description and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention is indicated by the following claims.

[0057] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. An airway inner diameter measuring instrument, comprising a holding part, an actuating part, a catheter body, an expansion part and a measuring component; the holding part is used for holding and is connected to the catheter body; the actuating part is used for controlling the measuring component to extend / retract the catheter body, and the actuating part can move relative to the holding part; the catheter body is used to construct a transmission channel and a fluid passage, and the holding part and the actuating part are arranged at the proximal end of the catheter body; the expansion part is used to perform expansion treatment on airway stenosis, and the measuring component is used to measure the airway size; the expansion part and the measuring component are arranged at the distal end of the catheter body; It is characterized in that The measuring component is also provided with a spray hole for dyeing marks.

2. The airway inner diameter measuring device according to claim 1, It is characterized in that The expansion part comprises at least two balloons with different outer diameters after expansion.

3. The airway inner diameter measuring device according to claim 1, It is characterized in that The actuating portion is in transmission connection with the measuring component, and the actuating portion can perform linear sliding, spiral motion or rotational motion relative to the holding portion to drive the measuring component to extend out of / retract into the catheter body.

4. The airway inner diameter measuring device according to claim 1, It is characterized in that At least one of the actuating portion and the holding portion is provided with a scale for marking the distance and / or angle of relative movement of the actuating portion compared to the holding portion, so as to ultimately characterize the airway inner diameter measurement result.

5. The airway inner diameter measuring device according to claim 1, It is characterized in that The measuring component is hollow, and an injection port is arranged at the proximal end, the distal end section head is closed, and a dyeing spray hole is arranged on the outer edge side of the pipe section closer to the distal end section head.

6. The airway inner diameter measuring device according to claim 1, It is characterized in that At least the portion of the measuring component close to the distal section head is made of shape memory alloy; or, at least the portion of the measuring component close to the distal section head is provided with an inner core with shape memory function; so that when the portion of the measuring component close to the distal section head extends from the catheter body, the measuring component bends approximately into a ring shape to fit the inner wall of the airway as the extended length of the measuring component gradually increases.

7. The airway inner diameter measuring device according to claim 2, It is characterized in that The catheter body at least comprises a multi-way connector, which leads out a first pipeline connected to the first expansion balloon in the catheter body, and / or a second pipeline connected to the second expansion balloon, and / or a dyeing tube connected to the measuring component.

8. The airway inner diameter measuring device according to claim 1, It is characterized in that The catheter body is provided with a first pipeline, a second pipeline and a dyeing tube. The first pipeline and / or the second pipeline are connected to the balloon expansion air pump via a multi-way connector. The proximal end of the dyeing tube is connected to the actuating part and the distal end is connected to the measuring component. The dyeing tube and the measuring component are driven to move by the actuating part.

9. The airway inner diameter measuring device according to claim 1, It is characterized in that The actuating part is a push-pull rod; or, the actuating part is a gear-rack transmission mechanism and its deformation; or, the actuating part is a worm-worm gear transmission mechanism and its deformation; or, a screw-threaded hole mechanism and its deformation; the holding part is a handle or a clamping part of a robotic arm.

10. The airway inner diameter measuring device according to claim 3, It is characterized in that One end of the measuring component is fixedly connected to the distal end of the catheter body.

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