JP3439219B2 - Medical pressure transducer with sliding element - Google Patents

Description

FIELD OF THE INVENTION The present invention relates to medical pressure transducers, and in particular to selectively mounting disposable flow path elements, such as domes, to reusable sensor elements. And a fluid pressure coupling diaphragm of each of the elements is in a face-to-face pressure coupling relationship.

BACKGROUND OF THE INVENTION In environments such as hospitals, there are many procedures for monitoring human body fluid pressure, such as blood pressure. Typically, such pressure is monitored outside the patient's body by a medical pressure transducer hydraulically coupled to the patient's circulatory system, for example via a catheter inserted into the body. To be done. The catheter is connected via a tube to a flow path inside the transducer, which is filled with salts for hydraulically connecting the pressure in the patient's body to the transducer.

The transducer has a sensor pressure-coupled to the flow path, which converts the pressure therein into an electrical signal corresponding to the pressure. This electrical signal is connected to the monitor via a cable and visibly displays the pressure.

One particular good result of such a transducer is obtained by a two-element system, in which the element with the expensive sensor is reusable and the other with the flow path in contact with the patient. The element is disposable. Each element is provided with a diaphragm that prohibits access to each of the sensors or channels. To measure the pressure in the flow channel, a disposable element is screwed over the reusable element and the diaphragm is placed in a face-to-face pressure coupling relationship, thereby transferring pressure from the flow channel to the sensor. Become. After use, the disposable element is removed from the reusable part, discarded and replaced with a new sterile unit.

U.S. Pat. No. 4,920,972 shows an example of a two element transducer in which a disposable channel element called a fluid dome is attached to a reusable sensor portion. These elements are fixed together by the action of screws, and the diaphragm is also in face-to-face pressure connection. Pressure from the channels in the dome is transmitted to the sensor of the reuse element via the dome diaphragm and the reusable diaphragm and cured gel. This screwed element may be attached to a support plate attached to a conventional pole.

Another example of a two element transducer is shown in International Patent Application No. WO95 / 01195. As shown in that publication, and with particular reference to FIG. 11 thereof, the dome is provided with wings extending outwardly toward the opposite side of the dome diaphragm, which is used with the sensor. It is slidably received in a groove formed in a reusable element containing a possible diaphragm. This groove also faces either side of the reusable diaphragm, allowing it to be easily and quickly slid so that the dome diaphragm is in a face-to-face relationship with the sensor or reusable diaphragm. . In particular, the reuse element may be designed as a support plate, so that there are no extra parts and no extra handling by the user. However, improvements in the handling of the sliding wings and grooves that would make the transducer easier to use and enhance the face-to-face pressure transfer relationship of the diaphragm would be desirable.

In one aspect of the invention, a medical pressure transducer is disposed on a flow passage adapted to be connected to a patient, a diaphragm connected to the flow passage, and one side surface of the diaphragm. At least one extending to the outside
A disposable dome having two mounting wings, a support, a sensor permanently associated with the support, a reusable diaphragm pressure coupled to the sensor, and a reusable diaphragm At least one side of the dome for slidingly receiving a dome wing and a dome diaphragm in a face-to-face relationship with a reusable diaphragm, at least 1.
A reusable element having one groove and at least one
A cam structure is provided for the two grooves and the dome wings to drive the disposable dome diaphragm against the reusable diaphragm when the dome wings are slidably received into the grooves. It is characterized by that.

The provision of the cam structure allows the two diaphragms to be initially at a slight separation or in gentle contact by inserting the dome at least partially into the reuse element. In this way, the diaphragms are not significantly damaged or worn as they slide against each other. Moreover, at least in the final stage of the element insertion process, the cam structure brings the diaphragms into contact with each other to establish a proper pressure transmission relationship therebetween. In the preferred embodiment, a cam structure is provided for this purpose by one or more cam ramps at the end of the sliding process of the element. One such bevel is formed as a step at the bottom end of the groove, which is ultimately in contact with the dome wing when it reaches the end of the process. In the preferred embodiment, the groove is formed behind the outer front wall. In this regard, another such bevel is formed at the apex of the mounting wing,
When the wing reaches the end of the process, it will eventually come into contact with the outer front wall.

According to another aspect of the present invention, a medical pressure transducer comprises a disposable dome and a reusable element as described above, wherein a tab receiving slot is formed in the reusable element to dispose of the disposable element. Characterized by a locking tab (or vice versa) in the dome, the tab and slot engage together, and the dome wings slide into the groove to catch When locked, it can be locked to the dome and the reuse element. In the preferred embodiment, the slot is formed in the outer front wall and the locking tab is located at a height above the associated wing on the dome and extends into the slot, with the diaphragm in a face-to-face relationship. Become. As a result, the dome and the reusable element are reliably locked, as if they were screwed together, but without the same handling dexterity.

According to yet another aspect of the invention, a medical pressure transducer comprises a disposable dome and a reusable element having a groove formed behind the outer front wall as described above. A second wing is provided, which is spaced above the mounting wing and forms a wall receiving space for the outer front wall forming a groove. In this regard, with respect to this aspect of the invention, a medical pressure transducer includes a support, a pressure sensor permanently associated with the support, a reusable diaphragm in pressure connection with the sensor, and a mounting structure. A disposable dome for use with a reusable element having an object, the disposable dome being adapted to be connected to a patient, a diaphragm connected to the flow path, and a reuse A mounting structure for cooperating with a mounting structure of the element to slidably mount the dome to the reusable element in a face-to-face relationship with the diaphragm, the dome mounting structure having at least a first position relative to the dome. First and second parallel wings having a wall receiving groove formed therebetween, the reusable element mounting structure comprising a dome wall receiving groove In at least one which is adapted to be received slidingly
It is characterized by having one wing-shaped outer front wall. In the preferred embodiment, the second wing overlies the outer front wall and totally obscures it. As a result, the assembled transducer does not appear to be made of two parts, instead it is viewed as a single unit. The overlying relationship between the outer wall and the second wing protects it from contamination that would enter the groove of the reuse element and cause filth. In a preferred embodiment, there are two such grooves and two such mounting wings that slide into and into the grooves, the grooves and the mounting wings being their respective diaphragms. It is located on the opposite side of.

In the preferred embodiment, there are also two second wings, the lateral side edges of which are notched,
A finish (grooved, serrated, or hump-shaped) is provided to provide a finger grip, which allows the user to slide the dome in and out of the groove. Similar knurls may be provided on the same shaped and similarly finished paddle to move the locking tabs. As a result, gripping the second wing compresses the paddle, thereby pulling the tab away from the slot and allowing the dome to slide out of the reuse element.

What has been described so far is that the disposable dome can be slid out of the reusable sensor element, which enhances the pressure transmission relationship between the diaphragms and improves the ease of use of the transducer. A medical pressure transducer is provided.

These and other objects and advantages of the invention will be apparent from the accompanying drawings and the description thereof.

Brief Description of the Drawings Some features of the present invention will become more readily apparent through a more detailed description with reference to the accompanying drawings.

  FIG. 1 is a perspective view of a converter according to the present invention.

  FIG. 2 is a front view of the converter shown in FIG.

  FIG. 3 is a front view of the reuse element of FIG.

  FIG. 4 is a cross-sectional view taken along line 4-4 of FIG.

FIG. 5 is an exploded cross-sectional view taken along line 5-5 of FIG.

FIG. 6 is a rear, parallel section view of the disposable element of FIG.

7A-7C are schematic side views taken along line 7A-7A of FIG. 2 to illustrate the interaction of the dome wings with the grooves of the reuse element.

FIG. 8 is an exploded schematic view in which the plurality of converters shown in FIG. 1 are attached to a pole.

FIG. 9 is a schematic front view of the plurality of transducers shown in FIG. 1 in a position attached to the poles.

DETAILED DESCRIPTION OF THE DRAWINGS Referring to FIG. 1, a medical pressure transducer 10 according to the present invention.
Is shown in perspective view. This transducer 10 consists of two main components, one of which is a reusable sensor element 100 according to the invention, the other of which is removable with respect to the reusable element 100, and Slidingly mounted disposable fluid dome element 200.

Referring to FIGS. 1-5, a reusable element 100 includes a plate-shaped opaque plastic support 102.
It turns out that it has. The plate 102 has a generally flat left edge 104 and a generally flat right edge 106.
And having generally flat top and bottom edges 108, 110, the plate 102 is generally rectangular.
A generally flat front surface 112 extends between these edges 104, 106, 108, 110.

From behind the front 112 a sensor chamber with a one-piece structure 1
14 extends (see FIGS. 4 and 5). Inside the sensor chamber 114, a plastic chimney 116 filled with hardened gel 117 is permanently fixed, such as by an adhesive (not shown), at its bottom,
An integrated circuit sensor chip 118 mounted on a printed circuit board 120 is provided. The printed circuit board 120 has suitable circuitry (not shown) and is secured to the chimney 116, thus permanently associating the sensor 118 with the reuse element 100. At the top of the chamber 114, the opening 12 through the front 112
Two are provided. Above the opening 122 is permanently attached a reusable diaphragm 124 made of an elastomer such as molded polyurethane. In the chamber 114, between the diaphragm 124 and the chimney 116, an additional gel 126 in a liquid state is injected through a filling hole 128, and via the gel 126 and the gel 117,
The diaphragm 124 and the sensor 118 are pressure-connected. The fill hole 128 is sealed with the diaphragm 124 slightly inflated and the gel 126 is cured.

The edge 130 of the diaphragm 124 has a cylindrical collar, and an annular groove 132 around the opening 122 in the front surface 112.
The diaphragm 124 with respect to the support 102 so that the front surface or surface 134 of the reusable diaphragm 124 is exposed in the plane of the front surface 112 or bulges slightly above it. There is. Multiple conductors
140 interconnects a calibration test switch 142 and a connector 144 to the printed circuit board 120 and sensor 118, all behind the front side 112 of the plate 102. The switch 142 is mounted in an open bottom well 145 formed in the front surface 112 and the switch button 146 has an opening 148 through the plate surface 112 at the lower left corner when viewed from the front (in FIG. 3). Can be contacted. Conductor 140 may be a separate wire or a conductive trace (not shown) on printed circuit board 149 carrying a ribbon cable and / or switch. Above the opening 148 is a compliant membrane 150 which protects the switch 142 and further grips the reuse element 100 between the thumb and forefinger (not shown) in the area of the membrane 150. The operation can be started by pressing the switch. The thin film 150 is adhesively held along its outer periphery to the edge of the well 145 defined in the opening 148. Pressing switch 142 causes a calibration test to be performed, which is generally described in U.S. Pat. It is supposed to be handled as a part.

To make an electrical connection to a monitor (not shown),
(FIGS. 2 and 3) A connector 144 is provided on the bottom right side of the element 100 when viewed from the front. The connector 144 may include a cylindrical plastic shell 152 having a female pin receiving connector 154 therein and is housed within the bulbous projecting region 156 of the element 100. Connector 144
Can be accessed through the connector port 158 at the bottom edge 110. Connector 144 may form part of the two connector set shown in US Pat. No. 5,167,522. An opaque plastic back plate 157 may be secured over the back side of plate 102, such as by an adhesive (not shown), to house the elements described above.

To mount the disposable dome element 200 described below, the plate 102 has a pair of grooves 160, 162 located on the left and right opposite sides of the reusable diaphragm 124 from the front (of FIG. 3). Is provided. Each groove 16
0, 162 are the respective outer front walls 1 associated with the plate 102
It is defined behind 64,166. For this,
The outer front walls 164, 166 are generally parallel to and spaced apart from the front face 112 and are retained by interconnecting side walls 170, 172, respectively, and the front face 112 and each outer front wall 164, Groove between 174 and 176 underside 166
It forms 160 and 162. Further, the lateral extent of each groove 160, 162 is defined by sidewalls 170, 172, respectively.

The lower side 174 or 176 of the outer front wall 164 or 166 is
Near the top edge 108 of the plate 102 to the bottom edge 110
There may be a slight draft angle (for molding) as one goes to (see FIG. 5). Depending on the draft angle, the width of the groove 160 or 162 is somewhat narrowed in the insertion direction of the dome 200. A cam structure is provided at the ends or bottom ends 178 of the grooves 160, 162 for purposes such as those described below. The cam structure in the illustrated preferred embodiment is provided by a cam bevel 180, which comprises a bevel 182 with 45 degrees and a subsequent step 184 to provide an overall accurate groove width (W _c ). Demarcating (figure
See 7A). The top edge 186 of each wall 164, 166 is exposed. The bottom end 178 of each groove 160 or 162 may be closed (not shown), but it is better to open it as shown to prevent dirt from collecting in the groove. Good.

Referring particularly to FIGS. 3 and 4, the right outer front wall
It will be appreciated that a recess, such as a tab receiving slot 192, is provided in the outer surface 190 of 166 (above the sidewall 172). The slot 192 extends into a narrow passage 194 that is also formed in the outer surface 190 (above the groove 162) and terminates in the outer surface at the chamfered portion 196 of the outer front wall 166. , All of these are for the purposes described below. The outer surface 190 is otherwise flat and parallel to the front surface 112. The outer surface 197 on the left side and the outer front wall 164 are also flat and parallel to the front surface 112.

5 and 6, the disposable dome element 200 is made of transparent or translucent plastic and is formed between the left and right edges 204, 206 and the top and bottom edges 208, 210. It can be seen that it has a central body 202
2 has a generally rectangular shape. A fluid passage well 212 is formed in the center of the back of the main body 202.
This is between the inlet hole 214 that extends from the front of the well 212 and is accessible along the bottom edge 210 and the outlet tube 216 that extends from the front of the well 212 above the top edge 208. Are in communication. The inlets and outlets 214 and 216 cooperate to extend the flow path 212 within the disposable dome element 200. The flow path 212 can be accessed through a large opening 218 along the back surface 220 of the central body 202. Well 212
The opening 218 and the opening 218 are formed by the cylindrical wall portion 221 in the central portion 202, and the wall portion 221 and the edges 204, 206, 20 are formed.
A cavity 222 is formed between 8 and 210.
Alternatively, the cavity 222 may be filled with plastic. In any case, the back 220 of the dome 200
The dome so that it matches the flat surface 112 of the plate 102.
It functions to form a flat or plate-like surface for 200.

In the opening 218, an elastomeric diaphragm 224 is permanently fixed to the central portion 202 along the back surface 220 to provide a fluid-tight wall for pressure transmission and to allow the interior of the dome 200 to be closed. The flow path is sealed with. Diaphragm 224
Is a molded polyurethane similar to diaphragm 124 and has a collar (not shown) mounted in an annular recess or groove (not shown) around opening 218.
Is provided. Alternatively, diaphragm 224 may be a sheet made of a urethane membrane material, the outer peripheral edge of which is adhesively or thermally bonded to the edge of opening 218 or a groove around opening 218 (see FIG. It may be retained in a compression ring (not shown), etc.

From the opposite left and right sides of the central portion 202 (as shown in FIGS. 2 and 4) outward (from the edges 204, 206) and toward both sides of the diaphragm 224, left and right mounting wings 230, 232 are provided. Extending, such that it is received in a unitary manner in the grooves 160, 162 of the reusable plate 102, the disposable diaphragm 224 in a facing relationship with the reusable diaphragm 124. Will be placed. The bottom edge 234 of each wing 230, 232 is 2
It is chamfered at 35 (see Figure 7A), the purpose of which will be described later. The bottom end 234 directly above the chamfered portion 235.
Has an overall accurate thickness or width, which, in combination with diaphragms 224 and 124, is approximately equal to the groove width (W _c ), putting the diaphragm in a proper pressure transfer relationship. To hold. In addition, a cam mechanism is also formed at the top or end 236 of each wing. In the illustrated preferred embodiment, another cam mechanism is provided by the cam bevel 240, which is the groove 160,
Similar to the cam bevel 180 in 162, it consists of a 45 degree bevel 242 and a trailing step 244 that defines the exact width (W _w ) of the wing 230 or 232 in the region of the trailing step 244. In this regard, the thickness or width of the grooves 160, 162 in the opening closer to the top edge 108 of the plate 102, in cooperation with the diaphragms 224 and 124, is approximately equal to the width (W _w ). In addition to or in addition to the holding ability between the bottom end 234 and the width (W _c ), the diaphragm can be held in an appropriate pressure transmission relationship.

The cam slope 180 and the cam slope 240 are reuse elements 10 respectively.
0 and disposable dome element 200 are provided with wings
When 230, 232 are slidably received in the grooves 160, 162 of the reuse element 100, they are adapted to engage their respective mating structures near the end of travel of the dome 200. . In this way, as the dome 200 enters the reusable element 100, there is a small gap (or gentle, sliding contact) between the diaphragms 124 and 224, at least damaging the diaphragm 124. It is designed not to wear. As dome 200 nears the end of its longitudinal movement into reusable element 100, wings 230, 232 drive somewhat axially toward front surface 112 and diaphragm 124 of plate 102. Accordingly, the disposable diaphragm 224 is driven into contact with the reusable diaphragm 124 to provide the proper pressure transmission relationship therebetween. To limit the degree of movement of the dome 200 with respect to the plate 102, a closure wall 2 is provided at the distal or top end 236 of each wing 230,232.
46 may be provided and the closing wall portion 246 is the outer front wall 1
64 or 166 will contact the top edge 186.

A second set of wings 250, 252 may be provided to facilitate use of the dome 200 with the reusable plate 102. Wings 250, 252 also extend from edges 204, 206, but are spaced above their respective mounting wings 230, 232 to provide wall receiving space 254, 2
56 is formed (FIGS. 4 and 7). Thus, as will be appreciated, the spaces 254, 256 function as mounting groove structures for receiving the outer walls 164, 166, respectively, which when the dome 200 is slidably received into the reuse element 100. It acts as a wing-like attachment structure for the reuse element. The second wings 250, 252 extend generally outwardly so as to substantially cover the outer walls 164, 166 and the elements 200 and 100 are shown in FIG.
When combined as shown in FIG. 1, it has the appearance as a single unit. Furthermore, wings 250, 252
It also provides a barrier that prevents debris from entering the grooves 160, 162 when attaching the dome 200 to the plate 102.

As can be seen in FIGS. 2 and 6, the lateral edges 260, 262 of the second wings 250, 252 may be jagged at 264, 265, respectively, which make the dome a reuse element 100. Dome 200 for installation and removal
It provides finger and thumb grip areas, respectively, for a user (not shown) to grip. Finger grips 264, 2
The 65 may be of a finished shape (eg, grooved, serrated, or bumpy) to facilitate such handling by a user. Referring specifically to FIG. 2, the knurled finger grip 265 of the right second wing 252 includes:
Elastic lock paddle or flexible paddle 270
Is provided, which has a knurled portion and a finished surface similar to the knurled portion 264 of the left second wing 250. At the distal end 272 of the paddle 270, a locking tab 274 is supported, which is elastically attached to the dome 200, spaced from and above the wings 232 and leaning towards the wings. . The lock paddle 270 is a hinge area 2 closer to the bottom end 278 of the wing 252.
By extending from 76, the bending action of the rock paddle 270
The locking tabs 274 are adapted to move toward the central portion 202 near the top end 280 of the wings 252.

When the dome 200 is slid into the reusable element 100, the locking tab 274 bears against the chamfered portion 196 (see FIG. 3) of the outer wall 166, thus bending the paddle 270 to the left. When the dome 200 is further inserted, the tab 274 is narrowed.
At the end of travel of dome 200 over 194, it bounces rightward into slot 192 (clicks) and locks dome 200 in place on plate 102, The diaphragms 224 and 124 are opposed to each other and arranged in a pressure transmission relationship (FIG. 7C). To remove the dome 200, the user (not shown) has a jagged portion.
Place the thumb (not shown) on 264 and index fingers (not shown) on the lock paddle 270 to grasp the dome 200 and compress them, the locking tab 274 disengages from the tab receiving slot 192 and the top edge 108 of the plate 102 The dome 200 can be pulled out by sliding it upwards.

The dome 200 is provided with a fast flash device 290 (such as the fast flash device shown in US Pat. No. 5,171,230) connected to the inlet hole 214 and a stop lock 292 connected to the outlet pipe 216. ing. Flash device 2
90 is connected to a saline source (not shown) by tube 294 and stop lock 292 is a catheter 298 which is placed by another tube 296 into the patient's circulatory system (not shown).
(See FIG. 2), the blood pressure of the patient can be monitored.

Referring to FIGS. 7A-7C (grooves 160 and associated walls have been removed for clarity), attachment of dome 200 to reusable element 100 is schematic for various aspects of the present invention. Is shown in. In FIG. 7A, the dome 200 is about to be attached to the plate 102 and the wings 2
32 is just about to start entering the groove 162 in the direction of the downward arrow (A). Thus the wings of the dome
232 enters the groove 162 from the direction of the top edge 108 of the plate 102. The apex 186 of the outer front wall 166 has wings 232
Wing 2 against the chamfered wall 235 at the base end of
Helps push the 32 into the space or groove 162 defined behind the outer front wall 166. In FIG. 7A,
The second wings 252 are spaced above the top surface 190 of the outer front wall 166 at a distance.

As shown in FIG. 7B, as the dome 200 continues to move downward toward the bottom wall 110, most of the length of the wings 232 will be in the groove 1.
Entering into 62, the wings 252 pass over the front 190 of the front wall 166. At this stage of progress, the diaphragm 224
There is a slight space or at least a gentle or active contact relationship (indicated by the symbol (S)) between and 124 to prevent damaging or abrading the diaphragm, especially diaphragm 124. Protection and the diaphragm is about to be reused for some domes 200. Near the end of the progression stage, the chamfer 235 is located on the slope 18 of the cam slope 180
Knock 2 and start driving the proximal end of wings 232 toward front surface 112 and diaphragm 124. At about the same time,
The cam bevel 242 hits the top edge 186 and moves the distal end of the wing 232 towards the front face 112 and the diaphragm 124, in this case the space between the diaphragms 224 and 124 (S).
Begins to diminish (or gentle contact begins to tighten). Also, the tab 274 corresponds to the chamfered portion 196 of the wall,
The paddle 270 can be bent inward to allow the tab 274 to enter the narrow path 194.

When the dome 200 has finished entering the reuse element 100, as shown in FIG.7C, the proximal ends of the wings 232 are in contact and below the trailing end 184, and the apex 186 of the outer wall 166 is Cam slope 24
Located in contact over the trailing end 244 of 0, the wings 232 are driven towards the plate surface 112 and the diaphragms 224 and 124
Are driven into contact and a desired pressure transfer relationship is established between them. Also, at the end of this stage of travel, the second wing 252 is positioned to almost completely cover the top surface 190 of the front wall 166, the paddle 270 is returned to its original position, and the tab 274 is slot 192. Locked inside. The same stages of progression as shown in FIGS.
The same is done between 230 and groove 160.

When used, the dome 200 is slidably attached to the reusable element 100 as described above and suitable tubes 294, 296 and catheter 298 are used to connect the flow path 212 of the transducer 10 to the patient. Connector 1
44 is used to connect the symbol indicating the patient's blood pressure to the monitor, for example, in another conventional manner. When the dome 200 is no longer in use for that patient, or the dome 200 needs to be replaced for any reason, the dome 200 pushes on the lock paddle 270 to re-use the dome 200.
It can be easily removed by sliding it out of the grooves 160 and 162 of 0, and the dome 200 (with the tube,
Alternatively it can be discarded (without the tube). Depending on the patient's condition, a new tube or an old tube in use is attached to the new dome 200, which new dome 200 is slidably attached to the reuse element 100 as described above. In many cases it is desirable to monitor more than one blood pressure. In this case, multiple transducers 10 may be used, as will now be described with reference to FIG.

The back plate 157 of each reuse element is provided with a mounting structure 300 for attaching the reuse element to the support frame 302, which frame is further attached to a pole mount clamp 304 secured to a pole 306. Has been. The mounting frame 302 has a plurality of receptacles 308 for receiving the respective support structures 300 of the plurality of reuse elements 100, the reuse elements being locked in place by the action of a locking handle 310 on the frame 302. To be done. The frame 302 also has the same mounting structure 300 received in the same receptacle 308 and held by the action of the handle 310 on the proximal end 312 of the pole mounting clamp 304. The clamp 304 is held to the pole 306 by conventional means, such as by interaction of the yoke 314 and a screw 316 around the pole 306. Alternatively, or additionally, each plate 102
May be provided as a modular type interconnect plate as shown in International Patent Application No. WO 95/01195.

Due to the rectangular nature of the plate 102, when multiple reusable elements are mounted as described above (see FIG. 9), they take on the appearance of one fixed unit, more or less modular. It is contemplated that any one reuse element 100 can be placed in any available receptacle 308 position on the frame 302. The dome 200 can be attached to their respective reuse elements 100 either before or after the associated reuse element 100 is coupled to the frame 302. Alternatively, one reuse element 10
The 0 may be attached directly to the pole mount clamp 304 and the frame 302 may be omitted.

From what has been described, medical pressure transducers are provided with a disposable fluid dome that can be slid and removed with respect to a reusable sensor with an enhanced pressure transmission relationship between the diaphragms. Has been improved to make it easier for the user to use the converter. Although the preferred embodiment shows the use of two wings and two grooves, each may employ at least one. Alternatively, the outer front wall and the front surface 112 may be coplanar with each other, for example, by appropriately adjusting the height of the diaphragm 124 or the mounting wings 230 and 232.
In addition, slots 192 are shown on the support 102 and the dome 20
Lock types 274 are shown above 0, but they may be reversed. The invention in its broader aspects is not limited to the specific details, representative apparatus, methods, and examples illustrated and described herein.

─────────────────────────────────────────────────── —————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————— were you free of charge, but are you sure? Bruner, Glendi. United States 43017 Dublin, Ohio, Donary Court 5605 (72) Inventor Adams Theodor Earl. United States 43002 Ambury, Ohio 4820 (72) Inventor Shah, Niresh Em. United States 43235 United States 43235 Ohio Rhombus, Anne Lane Boulevard 2661 (58) Fields investigated (Int.Cl. ⁷ , DB name) A61B 5/0215 G01L 19/00

Claims (34)

(57) [Claims] 1. In a medical pressure transducer, a flow path (212) adapted to be connected to a patient, a diaphragm (224) connected to the flow path, and one side surface of the diaphragm (224). Disposable dome (200) having at least one mounting wing (230, 232) extending with respect to
A support (102), a pressure sensor (118) permanently associated with the support, a reusable diaphragm (124) pressure coupled to the sensor, and one of the reusable diaphragm. At least one groove (160, 162) disposed laterally and adapted to slidably receive the wings of the dome and slidably receive the dome diaphragm in face-to-face relationship with the reusable diaphragm. )
A reusable element (100) having at least one said groove (160, 162) and said dome wing (23).
A cam structure (180, 240) is provided for the disposable diaphragm (224) when the dome wings are slidably received in the groove by the cam structure (180, 240). A pressure transducer for medical use characterized by being driven with respect to a flexible diaphragm (124). 2. In a medical pressure transducer, a flow path (212) adapted to be connected to a patient, a diaphragm (224) connected to the flow path, and one side surface of the diaphragm. At least one mounting wing (23
0, 232) and a reusable element (100) for use with a disposable dome (200), the reusable element being associated with a support (102) and permanently associated with the support. A pressure sensor (118), a reusable diaphragm (124) pressure coupled to the sensor, and one side of the reusable diaphragm for sliding the dome wings. At least one groove (160, 16) adapted to receive and slidably receive the dome diaphragm in face-to-face relationship with the reusable diaphragm.
2) and a cam structure (180) is provided with respect to the groove by which the disposable diaphragm (224) is provided when the dome wing is slidably received in the groove. ) Is driven against a reusable diaphragm (124). 3. A support (10) in a pressure transducer for medical use.
2) and a pressure sensor (11) permanently associated with the support.
8), a reusable diaphragm (124) pressure-coupled to the sensor, and disposed against one side of the reusable diaphragm to slidably receive the wings of the dome and Disposable dome for use with a reusable element (100) having at least one groove (160, 162) adapted to slidingly receive the diaphragm in a face-to-face relationship with the reusable diaphragm ( 200), the disposable dome being adapted to be connected to a patient, a flow path (212), a diaphragm (224) connected to the flow path, and one side of the diaphragm. An extension of at least one mounting wing (230, 232), said reuse element groove (16
0, 162) and is slidably received within the dome diaphragm in a face-to-face relationship with a reusable diaphragm, and a cam structure (240) is provided for the dome wing. And the cam structure drives the disposable diaphragm (224) relative to the reusable diaphragm (124) when the dome wing is slidably received in the groove. A medical pressure transducer characterized by the above. 4. A medical pressure transducer, wherein a flow path (212) adapted to be connected to a patient, a diaphragm (224) connected to the flow path, and one side surface of the diaphragm are provided. At least one mounting wing (23
Disposable dome (200) having a carrier, a support (102), a pressure sensor (118) permanently associated with the support, and a reusable pressure connection with the sensor. A diaphragm (124), disposed on one side of the reusable diaphragm, for slidingly receiving a dome wing, for sliding the dome diaphragm in a face-to-face relationship with the reusable diaphragm. A reusable element (100) having at least one groove (160, 162) adapted to receive, and a recess (192) and a protrusion for each of said support and dome (200). (274) are provided respectively, and the wings (230, 23
When the 2) slides into the groove (160, 162) and is received, the recess receives the protrusion and locks the disposable diaphragm in a face-to-face relationship with the reusable diaphragm. As described above, the medical pressure transducer characterized in that the recess (192) and the protrusion (274) are relatively positioned. 5. In a medical pressure transducer, a flow path (212) adapted to be connected to a patient, a diaphragm (224) connected to the flow path, and one side surface of the diaphragm. At least one mounting wing (23
0, 232) and a reusable element (100) for use with a disposable dome (200), the reusable element being associated with a support (102) and permanently associated with the support. A pressure sensor (118), a reusable diaphragm (124) pressure coupled to the sensor, and one side of the reusable diaphragm for sliding the dome wings. At least one groove (160, 1) adapted to slide and receive the dome diaphragm in face-to-face relationship with the reusable diaphragm.
62) and has a recess (192) with respect to said support
And a protrusion (274) are provided to allow the disposable diaphragm to be reused when the dome wings (230, 232) slide into the grooves (160, 162) and are received. So that the dome (200) is locked in a face-to-face relationship with the dome (200).
74) A medical pressure transducer characterized by being positioned relative to receive or to receive in a recess (192). 6. A support (10) for a pressure transducer for medical use.
2) and a pressure sensor (11) permanently associated with the support.
8), a reusable diaphragm (124) pressure-coupled to the sensor, and disposed on one side of the reusable diaphragm for slidingly receiving the wings of the dome, A reuse element having at least one groove adapted to slideably receive the diaphragm in face-to-face relationship with the reusable diaphragm (10
0) a disposable dome (200) for use with the disposable dome (212) adapted to be connected to a patient, and a diaphragm (224) connected to the flow path (212). ) And at least one mounting wing (230, 232) extending to one side of the diaphragm, the dome being slidably received in the groove of the reuse element. The diaphragm is slidably received in a face-to-face relationship with a reusable diaphragm, and the protrusion (274) with respect to the dome (200).
And a recess (192) are provided to lock the disposable diaphragm in a face-to-face relationship with the reusable diaphragm when the wing slides into the groove and is received. Respectively in the recess (192) with respect to the support or by the projections (2
74) A medical pressure transducer characterized by being positioned relatively to receive or receive. 7. A support (10) in a pressure transducer for medical use.
2) and a pressure sensor (11) permanently associated with the support.
8), a reusable diaphragm (124) pressure-coupled to the sensor, and disposed on one side of the reusable diaphragm for slidably receiving the wings of the dome, A reuse element having at least one groove adapted to slideably receive the diaphragm in face-to-face relationship with the reusable diaphragm (10
0) a disposable dome (200) for use with the disposable dome (212) adapted to be connected to a patient, and a diaphragm (224) connected to the flow path (212). ) And at least one mounting wing (230, 232) extending to one side of the diaphragm, the dome being slidably received in the groove of the reuse element. The diaphragm is slidably received in a face-to-face relationship with the reusable diaphragm, the protrusion (274) is elastically attached to the dome (200), and the wing is the groove. Medical pressure characterized in that the disposable diaphragm is brought into face-to-face relationship with the reusable diaphragm when locked into the reusable element (100) to lock the dome (200) to the reusable element (100). converter. 8. In a medical pressure transducer, a flow path (212) adapted to be connected to a patient, a diaphragm (224) connected to the flow path, and one side surface of the diaphragm. At least one mounting wing (23
Disposable dome (200) having a carrier, a support (102), a pressure sensor (118) permanently associated with the support, and a reusable pressure connection with the sensor. A diaphragm (124), at least one outer front wall (164, 166), formed behind the outer front wall and positioned against one side of the reusable diaphragm, A reuse element (10) having slidably received wings and at least one groove (160, 162) adapted to slidably receive the dome diaphragm in face-to-face relationship with a reusable diaphragm.
0) and a second wing (250, 252) is provided with respect to the dome (200), which are spaced above the mounting wing (230, 232). Wall receiving space (254, 2) for wall (164, 166)
56) and edges (260, 26) that facilitate removal of the disposable dome (200) from the reuse element (100).
2) A pressure transducer for medical use, which is characterized in that 9. A support (10) for a medical pressure transducer.
2) and a pressure sensor (11) permanently associated with the support.
8), a reusable diaphragm (124) pressure coupled to the sensor, and at least one outer front wall (164,
166) and a reusable element (100) having a groove (160, 162) formed behind the outer front wall and located against one side of the reusable diaphragm.
A flow path (212) comprising a disposable dome (200) for use therewith, the disposable dome adapted to be connected to a patient, and a diaphragm (224) connected to the flow path. , At least one mounting wing (230, 232) extending to one side of the diaphragm and slidably received in the groove (160, 162) of the reuse element. A second face of the dome (200) for slidingly receiving the dome diaphragm in a face-to-face relationship with a reusable diaphragm.
Wing portions (250, 252) are provided, which are spaced above the mounting wing portions (230, 232), and which receive a wall receiving space (254) for the outer front wall (164, 166). , 256) and thereby the reuse element groove (16
0, 162) to at least one mounting wing (230, 23)
A medical pressure transducer characterized by forming edges (260, 262) for easy removal and removal of step 2). 10. A support (10) in a pressure transducer for medical use.
2) and a pressure sensor (10) permanently associated with the support.
8), a reusable diaphragm (124) pressure coupled to the sensor, and at least one outer front wall (164,
166) and a reusable element (10) having a mounting structure including
0) a disposable dome (200) for use with the disposable dome (212) adapted to be connected to a patient, and a diaphragm (224) connected to the flow path (212). ), And a dome mounting structure (230, 232, 250, 252) for slidably mounting the dome to the reusable element in a face-to-face relationship with the diaphragm in cooperation with the reusable element mounting structure. ) And the dome mounting structure comprises at least first and second parallel wings (230, 250, 232, 252) between which the wing-shaped outer front wall (164, 166) and a medical pressure transducer for slidably receiving edges (260, 262) thereby facilitating removal of the dome from the reuse element. 11. The medical pressure transducer according to claim 1, wherein the cam structure (180) has the groove (160,
162) Medical pressure transducers associated with. 12. The medical pressure transducer according to claim 11, wherein the second cam structure (240) has a wing portion (23).
0, 232) medical pressure transducers associated with. 13. The medical pressure transducer according to claim 1, wherein the cam structure (240) has wings (230, 23).
2) Medical pressure transducers related to. 14. The medical pressure transducer according to claim 2, wherein the cam structure (180) has a bottom end of a groove (160, 162). A medical pressure transducer defined in section (178). 15. The medical pressure transducer according to claim 3 or 13, wherein the cam structure (240).
A medical pressure transducer having a wing formed at the top end (236) of the wings (230, 232). 16. The medical pressure conversion device according to claim 12, wherein the second cam structure (240) includes a wing portion (230,
232) a medical pressure transducer formed at the top edge (236). 17. The medical pressure transducer according to any one of claims 1 to 3 and 11 to 16, wherein the cam structure (180, 240) is a step portion. Medical pressure transducer having (184, 244). 18. A medical pressure transducer according to any one of claims 1, 2 and 11 to 17, wherein said cam structure (180, 240) has a slope (182). , 2
42) A medical pressure transducer having. 19. The medical pressure transducer according to any one of claims 1 to 3 and 8 to 17, which is elastic to the dome (200). Has a tab (224) attached to it,
Medical pressure by which the dome (200) can be locked against the reuse element (100) when the wings (230, 232) are slid into the grooves (160, 162) and received. converter. 20. The medical pressure transducer according to any one of claims 1 to 3 and 11 to 18, further comprising: the support and the dome (200). Recesses (192) and protrusions (274) are provided for each, and the wings (230, 232) have grooves (1).
60, 162) so that the recess receives the projection and locks the disposable diaphragm in a face-to-face relationship with the reusable diaphragm when the recess (60, 162) is received. 192) and the protrusion (274) are located relatively to each other. 21. A medical pressure transducer as claimed in any one of claims 4 to 6 and 20 wherein the recess is a tab associated with the support (102). A medical pressure transducer which is a receiving slot (192) and wherein the protrusion is a locking tab (274) associated with the dome (200). 22. The medical pressure transducer as set forth in claim 21, wherein said groove (160, 162) has an outer front wall (16).
4,166) Medical pressure transducer formed behind. 23. The medical pressure transducer according to any one of claims 8 to 10, further comprising a protrusion (274) with respect to the second wing (250, 252).
And a medical pressure transducer that is received in a recess (192) formed in the reuse element (100). 24. The medical pressure transducer as set forth in claim 22 or 23, further comprising the recess (19).
2) A medical pressure transducer in which the outer front wall (164, 166) is formed. 25. Claims 7 and 20 to 24
In the pressure transducer for medical treatment according to any one of the above items, a paddle (270) having flexibility with respect to the dome is further provided, and the protrusion or the lock tab (274) has flexibility. A medical pressure transducer supported in a paddle (270). 26. The medical pressure transducer as set forth in claim 25, wherein the protrusion or the lock tab (27
A medical pressure transducer in which 4) is supported at the distal end (272) of a flexible paddle (270). 27. The medical pressure transducer according to any one of claims 1 to 7 and 11 to 20, wherein the groove (160, 162) has an outer front wall. (164, 166), and the second wing (25
0,252) is spaced above the mounting wings (230,232) and forms a wall receiving space (254,256) for the outer front wall (164,166) Pressure transducer. 28. Claims 8 to 10, 23
In the medical pressure transducer described in any one of the paragraphs and 27, further, the finger grip portions (264, 265) are second.
A medical pressure transducer formed on the wings (250, 252). 29. Claims 8, 9, 23, and
27. In the medical pressure transducer described in any one of 27 and 28, the second wings (250, 252) extend parallel to the attachment wings (230, 232). Medical pressure transducer. 30. The medical pressure transducer according to claim 28, wherein the finger grip portion (264, 265) is located at a lateral edge (260, 262) of the second wing portion (250, 252). A medical pressure transducer formed along. 31. A medical pressure transducer as claimed in any one of claims 1 to 30 in which the reuse element (100) has two grooves (160, 162). Then
A medical pressure transducer in which the disposable dome (200) has two said mounting wings (230, 232). 32. The medical pressure transducer as set forth in claim 31, wherein said groove (260, 262) is disposed on the opposite side of the reusable diaphragm (124), and said wing (23).
0, 232) is located on the opposite side of the disposable diaphragm (224). 33. A medical pressure transducer according to any one of claims 1 to 32, further comprising a calibration test switch (142) for the support (102), A medical pressure transducer electrically connected to the sensor (118). 34. The medical pressure transducer according to claim 1, wherein the support (102) has a generally rectangular outer peripheral side edge. A medical pressure transducer having (104, 106, 108, 110) and said (112) having a reusable diaphragm (124) exposed.